Cita APA (7a ed.)

Holmes, D., & Solomon, T. (1971). Drug use in matched groups of hippies and non hippies. Center for Community Research.

Cita Chicago Style (17a ed.)

Holmes, Douglas, y Theo Solomon. Drug Use in Matched Groups of Hippies and Non Hippies. New York: Center for Community Research, 1971.

Cita MLA (9a ed.)

Holmes, Douglas, y Theo Solomon. Drug Use in Matched Groups of Hippies and Non Hippies. Center for Community Research, 1971.