Cita APA

Johnston, R. F., & Johnston, R. F. (1960). Directory to the bird-life of kansas. Lawrence: Museum of Natural History, University of Kansas.

Citación estilo Chicago

Johnston, Richard F., y Richard F. Johnston. Directory to the Bird-life of Kansas. Lawrence: Museum of Natural History, University of Kansas, 1960.

Cita MLA

Johnston, Richard F., y Richard F. Johnston. Directory to the Bird-life of Kansas. Lawrence: Museum of Natural History, University of Kansas, 1960.