Citazione Stile APA (7a Edizione)

Cull, J. G., & Hardy, R. E. (1974). Types of drug abusers and their abuses. Thomas.

Citazione stile Chigago Style (17a edizione)

Cull, John G., e Richard E. Hardy. Types of Drug Abusers and Their Abuses. Springfield, Ill: Thomas, 1974.

Citatione MLA (9a ed.)

Cull, John G., e Richard E. Hardy. Types of Drug Abusers and Their Abuses. Thomas, 1974.