APA (7th ed.) Citation

Petersen, D. M. (1978). Drug use among the aged. Addictive diseases.

Chicago Style (17th ed.) Citation

Petersen, David M. "Drug Use Among the Aged." Addictive Diseases 1978.

MLA (9th ed.) Citation

Petersen, David M. "Drug Use Among the Aged." Addictive Diseases, 1978.

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