Cita APA (7a ed.)

Thompson, S. A., Buker, W. E., & Macdonald, M. (1989). Notes on the distribution of Pennsylvania plants: Based on specimens in the Carnegie Museum of Natural History herbarium. Zenodo.

Cita Chicago Style (17a ed.)

Thompson, Sue A., W. E. Buker, y Myrta Macdonald. Notes on the Distribution of Pennsylvania Plants: Based on Specimens in the Carnegie Museum of Natural History Herbarium. Zenodo, 1989.

Cita MLA (9a ed.)

Thompson, Sue A., et al. Notes on the Distribution of Pennsylvania Plants: Based on Specimens in the Carnegie Museum of Natural History Herbarium. Zenodo, 1989.