APA (7e ed.) Bronvermelding

Gelting, P. (1937). Studies on the food of the east Greenland ptarmigan: Especially in its relation to vegetation and snow-cover. C.A. Reitzel.

Chicago (17e ed.) Bronvermelding

Gelting, Paul. Studies on the Food of the East Greenland Ptarmigan: Especially in Its Relation to Vegetation and Snow-cover. København: C.A. Reitzel, 1937.

MLA (8e ed.) Bronvermelding

Gelting, Paul. Studies on the Food of the East Greenland Ptarmigan: Especially in Its Relation to Vegetation and Snow-cover. C.A. Reitzel, 1937.