Cita APA (7th ed.)

Green, J. C., & Janssen, R. B. (1975). Minnesota birds: Where, when, and how many. Published by the University of Minnesota Press, for the James Ford Bell Museum of Natural History.

Cita Chicago (17th ed.)

Green, Janet C., i Robert B. Janssen. Minnesota Birds: Where, When, and How Many. Minneapolis: Published by the University of Minnesota Press, for the James Ford Bell Museum of Natural History, 1975.

Cita MLA (9th ed.)

Green, Janet C., i Robert B. Janssen. Minnesota Birds: Where, When, and How Many. Published by the University of Minnesota Press, for the James Ford Bell Museum of Natural History, 1975.