Gaya APA

Al, P, L, E. (2013). HEALTH, WELLBEING, COMPETENCE AND AGING . : CV. Spektra Anugerahabadi.

Gaya MLA

Al, Ping-Chung, Leung, Et. "HEALTH, WELLBEING, COMPETENCE AND AGING". : CV. Spektra Anugerahabadi, 2013. Tadris Biologi.