APA (7th ed.) Citation

Zarco, R. M. (1973). A sociological study of the illegal narcotic activity in the Philippines [microform]. Photoduplication Service.

Chicago Style (17th ed.) Citation

Zarco, Ricardo Morales. A Sociological Study of the Illegal Narcotic Activity in the Philippines [microform]. Quezon City: Photoduplication Service, 1973.

MLA (9th ed.) Citation

Zarco, Ricardo Morales. A Sociological Study of the Illegal Narcotic Activity in the Philippines [microform]. Photoduplication Service, 1973.

Warning: These citations may not always be 100% accurate.