Photo: Keeping Up with the Kardashians/ youtube

kim k and kourtney

When it comes to nannies, the Kardashian sisters' views about their children’s caregivers are vastly different, a source says.

Thursday’s episode ofKeeping Up with the Kardashianschronicled anexplosive argument about nanniesbetweenKim KardashianandKourtney Kardashian, after Kim, 40, accused Kourtney, 42, of “degrading” one of her nannies in front of the kids.

Kourtney denied it, later telling Kim that the nanny (who remained unnamed) “would never work” for her. At one point, Kim said she likes the nanny and preferred “to keep my staff for a long time, so that’s how I feel,” to which the Poosh founder said, “Keep her. She will not ever be around my kids.”

Then, Kim responded: “Kourtney, you can’t even keep a nanny.”

“Both Kim and Khloé treat their nannies like family,” the source says. “Kim has several nannies that help with her kids and they have worked for the family for a while. Khloé has also held onto a nanny for True that she treats well.”

Meanwhile, the source adds, “Kourtney’s approach to the kids' nannies is different.”

Reps for Kourtney and Kim did not immediately respond to PEOPLE’s requests for comment.

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Kim is mom to four kids: daughtersNorth, 7, andChicago, 3, and sonsSaint, 5, andPsalm, 2. Kourtney has three children: sons sonMason Dash, 11, andReign Aston, 6, as well as daughterPenelope Scotland, 8½, all of whom she co-parents with exScott Disick.

In March, Khloé, 36, who has 3-year-old daughter True, told Australia’sGritty Prettymagazinethe oneparenting promise she and her siblingstry to maintain with each other: When it comes to offering parenting advice, they know not to speak out of turn."

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“There are always challenges with raising kids but I’m so fortunate to have such a strong family support group. We also know that we have individual families and don’t like to give a lot of advice, unless it’s solicited,” Khloé told the outlet at the time. “We never mom-shame. We hate a shamer.”

Later in Thursday’sKUWTKepisode — after Kim and Kourtney had a calmer chat to address the situation — Kim said in a confessional that she saw “both sides” of the incident involving one of her nannies, and that she felt “guilty” about the way in which she broached the topic with Kourtney.

source: people.com