Cita APA (7a ed.)

Godfrey, C. (1990). Preventing alcohol and tobacco problems. Preventing alcohol and tobacco problems.

Cita Chicago Style (17a ed.)

Godfrey, Christine. "Preventing Alcohol and Tobacco Problems." Preventing Alcohol and Tobacco Problems 1990.

Cita MLA (8a ed.)

Godfrey, Christine. "Preventing Alcohol and Tobacco Problems." Preventing Alcohol and Tobacco Problems, 1990.