Cita APA (7a ed.)

Spencer, C. P., & Navaratnam, V. (1981). Drug abuse in East Asia. Oxford Univ. Pr.

Cita Chicago Style (17a ed.)

Spencer, C. P., y V. Navaratnam. Drug Abuse in East Asia. Kuala Lumous [u.a.]: Oxford Univ. Pr, 1981.

Cita MLA (8a ed.)

Spencer, C. P., y V. Navaratnam. Drug Abuse in East Asia. Oxford Univ. Pr, 1981.