Cita APA

Romer, A. S. 1., & Romer, A. S. 1. (1945). Vertebrate paleontology (2. edition.). Chicago: The University of Chicago Press.

Citación estilo Chicago

Romer, Alfred Sherwood 1894-1973, y Alfred Sherwood 1894-1973 Romer. Vertebrate Paleontology. 2. edition. Chicago: The University of Chicago Press, 1945.

Cita MLA

Romer, Alfred Sherwood 1894-1973, y Alfred Sherwood 1894-1973 Romer. Vertebrate Paleontology. 2. edition. Chicago: The University of Chicago Press, 1945.