Drake, H. (1952). Revision of the ranges of the pocket gophers of southeastern Washington and northeastern Oregon and the description of a new subspecies, Thomomys talpoides whitmani. Walla Walla College, Dept. of Biological Sciences.
Chicago Style (17. basım) AtıfDrake, Harold. Revision of the Ranges of the Pocket Gophers of Southeastern Washington and Northeastern Oregon and the Description of a New Subspecies, Thomomys Talpoides Whitmani. College Place: Walla Walla College, Dept. of Biological Sciences, 1952.
MLA (8th ed.) AtıfDrake, Harold. Revision of the Ranges of the Pocket Gophers of Southeastern Washington and Northeastern Oregon and the Description of a New Subspecies, Thomomys Talpoides Whitmani. Walla Walla College, Dept. of Biological Sciences, 1952.