APA

Pitelka F. A., . (1951). Speciation and ecologic distribution in american jays of the genus Aphelocoma. Los Angeles: University of California Press.

Chicago

Pitelka Frank A, . 1951. Speciation and ecologic distribution in american jays of the genus Aphelocoma. Los Angeles: University of California Press.

Harvard

Pitelka F. A., . (1951). Speciation and ecologic distribution in american jays of the genus Aphelocoma. Los Angeles: University of California Press.

MLA

Pitelka Frank A, . Speciation and ecologic distribution in american jays of the genus Aphelocoma. Los Angeles: University of California Press. 1951.