Cita APA (7a ed.)

Huggard, D. J. (1993). Effect of snow depth on predation and scavenging by gray wolves. [s.n.].

Cita Chicago Style (17a ed.)

Huggard, David J. Effect of Snow Depth on Predation and Scavenging by Gray Wolves. [S.l.]: [s.n.], 1993.

Cita MLA (9a ed.)

Huggard, David J. Effect of Snow Depth on Predation and Scavenging by Gray Wolves. [s.n.], 1993.