Cita APA (7a ed.)

Roberts, T. S. (1916). The winter bird-life of Minnesota. Being an annotated list of birds that have been found within the state of Minnesota during the winter months. University of Minnesota.

Cita Chicago Style (17a ed.)

Roberts, Thomas S. The Winter Bird-life of Minnesota. Being an Annotated List of Birds That Have Been Found Within the State of Minnesota During the Winter Months. Minnesota: University of Minnesota, 1916.

Cita MLA (9a ed.)

Roberts, Thomas S. The Winter Bird-life of Minnesota. Being an Annotated List of Birds That Have Been Found Within the State of Minnesota During the Winter Months. University of Minnesota, 1916.