Hoffmeister, R. G. (1991). The hyoid in North American squirrels, Sciuridae, with remarks on associated musculatura. Universidad Nacional Autónoma de México.
Citazione stile Chigago Style (17a edizione)Hoffmeister, Robert G. The Hyoid in North American Squirrels, Sciuridae, with Remarks on Associated Musculatura. Universidad Nacional Autónoma de México, 1991.
Citatione MLA (9a ed.)Hoffmeister, Robert G. The Hyoid in North American Squirrels, Sciuridae, with Remarks on Associated Musculatura. Universidad Nacional Autónoma de México, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.