APA

Smith H. M., Taylor E. H., . (1950). An annotated checklist and key to the reptiles of Mexico, exclusive of the snakes. [Washington, D.C.]: Smithsonian Institution, United States National Museum.

Chicago

Smith Hobart M, Taylor Edward H, . 1950. An annotated checklist and key to the reptiles of Mexico, exclusive of the snakes. [Washington, D.C.]: Smithsonian Institution, United States National Museum.

Harvard

Smith H. M., Taylor E. H., . (1950). An annotated checklist and key to the reptiles of Mexico, exclusive of the snakes. [Washington, D.C.]: Smithsonian Institution, United States National Museum.

MLA

Smith Hobart M, Taylor Edward H, . An annotated checklist and key to the reptiles of Mexico, exclusive of the snakes. [Washington, D.C.]: Smithsonian Institution, United States National Museum. 1950.