Cita APA (7th ed.)

Modell, W., & Lansing, A. j. a. (1980). Drugs (2d ed.). Time-Life Books.

Cita Chicago (17th ed.)

Modell, Walter, i Alfred joint auth Lansing. Drugs. 2d ed. Hongkong: Time-Life Books, 1980.

Cita MLA (9th ed.)

Modell, Walter, i Alfred joint auth Lansing. Drugs. 2d ed. Time-Life Books, 1980.