APA (7th ed.) Citation

Zarco, R. M. (1975). Two research monographs on drug abuse in the Philippines. Government Printing Office.

Chicago Style (17th ed.) Citation

Zarco, Ricardo M. Two Research Monographs on Drug Abuse in the Philippines. Manila: Government Printing Office, 1975.

MLA (9th ed.) Citation

Zarco, Ricardo M. Two Research Monographs on Drug Abuse in the Philippines. Government Printing Office, 1975.