Colbert, E. H. (1969). Evolution of the vertebrates: A history of the backboned animals through time (2nd ed.).
استشهاد بنمط شيكاغوColbert, Edwin H. Evolution of the Vertebrates: A History of the Backboned Animals Through Time. 2nd ed. 1969.
MLA استشهادColbert, Edwin H. Evolution of the Vertebrates: A History of the Backboned Animals Through Time. 2nd ed. 1969.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.