APA (7th ed.) Citation

Hellmayr, C. E. (1924). Catalogue of birds of the Americas. Part III Pteroptochidae - Conopophagidae Formicariidae. Zenodo.

Chicago Style (17th ed.) Citation

Hellmayr, Charles E. Catalogue of Birds of the Americas. Part III Pteroptochidae - Conopophagidae Formicariidae. Zenodo, 1924.

MLA (9th ed.) Citation

Hellmayr, Charles E. Catalogue of Birds of the Americas. Part III Pteroptochidae - Conopophagidae Formicariidae. Zenodo, 1924.

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