Lee, Jin-kyung, and Sarah Schoppe-Sullivan. 2022. “Paternal Identity, Maternal Gate Opening, and Fathers’ Longitudinal Positive Engagement”. Journal of Family Psychology 37 (2): 243-55. Referenced from psycnet.apa.org: Paternal Identity, Maternal Gate Opening, and Fathers’ Longitudinal Positive Engagement.

Lee, Jin-kyung, and Sarah Schoppe-Sullivan. 2017. “Resident Fathers’ Positive Engagement, Family Poverty, and Change in Child Behavior Problems”. Family Relations 66 (3): 484-96. Referenced from onlinelibrary.wiley.com: Resident Fathers’ Positive Engagement, Family Poverty, and Change in Child Behavior Problems.