Gaya APA

Bourgeois, J, A. et al (2018). Geriatric Psychiatry Study Guide (1st ed. 2018). New york: Springer International Publishing.

Gaya MLA

Bourgeois, James, A.. et al. "Geriatric Psychiatry Study Guide". 1st ed. 2018 New york: Springer International Publishing, 2018. Text.