Cita APA

Erskine, A. (1977). Birds in boreal Canadá: Communities, densities and adaptations (1a. ed.). Otawa, Can.: Minister of Supply and Services.

Citación estilo Chicago

Erskine, Anthony. Birds in Boreal Canadá: Communities, Densities and Adaptations. 1a. ed. Otawa, Can.: Minister of Supply and Services, 1977.

Cita MLA

Erskine, Anthony. Birds in Boreal Canadá: Communities, Densities and Adaptations. 1a. ed. Otawa, Can.: Minister of Supply and Services, 1977.