APA

Grinnell J., . (1935). Differentiation in pocket gophers of the Thomomys bottae group in northern California and southern Oregon. Berkeley, Calif: University of California Press.

Chicago

Grinnell Joseph, . 1935. Differentiation in pocket gophers of the Thomomys bottae group in northern California and southern Oregon. Berkeley, Calif: University of California Press.

Harvard

Grinnell J., . (1935). Differentiation in pocket gophers of the Thomomys bottae group in northern California and southern Oregon. Berkeley, Calif: University of California Press.

MLA

Grinnell Joseph, . Differentiation in pocket gophers of the Thomomys bottae group in northern California and southern Oregon. Berkeley, Calif: University of California Press. 1935.