APA (7th ed.) Citation

Smithsonian Institution. (1920). Trees and shrubs of Mexico. GPO.

Chicago Style (17th ed.) Citation

Smithsonian Institution. Trees and Shrubs of Mexico. [Washington]: GPO, 1920.

MLA (9th ed.) Citation

Smithsonian Institution. Trees and Shrubs of Mexico. GPO, 1920.

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