Lestina VL, Walljasper CM. Proposed Standard for Multiple Relationships in the APA Ethical Principles of Psychologists and the Code of Conduct. GradStudentJofPsych [Internet]. 2007 Jan. 1 [cited 2024 May 19];9:25-32. Available from: https://journals.library.columbia.edu/index.php/gsjp/article/view/10821