Cita APA (7a ed.)

Coggans, N., & McKellar, S. (1994). Drug use amongst peers - peer pressure or peer preference. Drugs, 1(1), 15-26.

Cita Chicago Style (17a ed.)

Coggans, Niall, y Susan McKellar. "Drug Use Amongst Peers - Peer Pressure or Peer Preference." Drugs 1, no. 1 (1994): 15-26.

Cita MLA (8a ed.)

Coggans, Niall, y Susan McKellar. "Drug Use Amongst Peers - Peer Pressure or Peer Preference." Drugs, vol. 1, no. 1, 1994, pp. 15-26.