APA (7th ed.) Citation

Gyldenstolpe, N. (1945). A contribution to the ornithology of Northern Bolivia. Almqvist & Wiksell.

Chicago Style (17th ed.) Citation

Gyldenstolpe, Nils. A Contribution to the Ornithology of Northern Bolivia. Stockholm: Almqvist & Wiksell, 1945.

MLA (9th ed.) Citation

Gyldenstolpe, Nils. A Contribution to the Ornithology of Northern Bolivia. Almqvist & Wiksell, 1945.

Warning: These citations may not always be 100% accurate.