APA (7th ed.) Citation

Levin, G., Roberts, E. B., & Hirsch, G. B. (1975). The persistent poppy: A computer-aided search for heroin policy. Ballinger Pub. Co..

Chicago Style (17th ed.) Citation

Levin, Gilbert, Edward Baer Roberts, and Gary B. Hirsch. The Persistent Poppy: A Computer-aided Search for Heroin Policy. Cambridge, Mass.: Ballinger Pub. Co., 1975.

MLA (9th ed.) Citation

Levin, Gilbert, et al. The Persistent Poppy: A Computer-aided Search for Heroin Policy. Ballinger Pub. Co., 1975.