Cita APA (7a ed.)

(1977). Birds in boreal Canada: Communities, densities and adaptations. Canadian widlife service.

Cita Chicago Style (17a ed.)

Birds in Boreal Canada: Communities, Densities and Adaptations. Ottawa: Canadian widlife service, 1977.

Cita MLA (8a ed.)

Birds in Boreal Canada: Communities, Densities and Adaptations. Canadian widlife service, 1977.