Cita APA (7a ed.)

Pettiway, L. E. (1995). Copping crack: The travel behavior of crack users. Justice quarterly, 12(3), 499-524.

Cita Chicago Style (17a ed.)

Pettiway, Leon E. "Copping Crack: The Travel Behavior of Crack Users." Justice Quarterly 12, no. 3 (1995): 499-524.

Cita MLA (9a ed.)

Pettiway, Leon E. "Copping Crack: The Travel Behavior of Crack Users." Justice Quarterly, vol. 12, no. 3, 1995, pp. 499-524.