Cita APA (7a ed.)

Birkett, D. J. (1979). Stimulants, depressants and analgesics. Research Paper.

Cita Chicago Style (17a ed.)

Birkett, D. J. "Stimulants, Depressants and Analgesics." Research Paper 1979.

Cita MLA (8a ed.)

Birkett, D. J. "Stimulants, Depressants and Analgesics." Research Paper, 1979.