APA

Hooper E. T., . (1938). Geographical variation in wood rats of the species Neotoma fuscipes. Berkeley, Calif: University of California Press.

Chicago

Hooper Emmet T, . 1938. Geographical variation in wood rats of the species Neotoma fuscipes. Berkeley, Calif: University of California Press.

Harvard

Hooper E. T., . (1938). Geographical variation in wood rats of the species Neotoma fuscipes. Berkeley, Calif: University of California Press.

MLA

Hooper Emmet T, . Geographical variation in wood rats of the species Neotoma fuscipes. Berkeley, Calif: University of California Press. 1938.