APA引文

Packard, F. M. (1950). The birds of Rocky Mountain National Park. Estes Park, Colo.: Rocky Mountain Nature Association.

Chicago Style Citation

Packard, Fred Mallery. The Birds of Rocky Mountain National Park. Estes Park, Colo.: Rocky Mountain Nature Association, 1950.

MLA引文

Packard, Fred Mallery. The Birds of Rocky Mountain National Park. Estes Park, Colo.: Rocky Mountain Nature Association, 1950.

警告：这些引文格式不一定是100％准确.