Citazione Stile APA (7a Edizione)

Norris, R. A., Connell, C. E., & Johnston, D. W. (1957). Notes on Fall Plumages, Weights, and Fat Condition in the Ruby-Throated Hummingbird. Zenodo.

Citazione stile Chigago Style (17a edizione)

Norris, Robert A., Clyde E. Connell, e David W. Johnston. Notes on Fall Plumages, Weights, and Fat Condition in the Ruby-Throated Hummingbird. Zenodo, 1957.

Citatione MLA (9a ed.)

Norris, Robert A., et al. Notes on Fall Plumages, Weights, and Fat Condition in the Ruby-Throated Hummingbird. Zenodo, 1957.