Cita APA (7a ed.)

Weber, W. A. (1966). Additions to the flora of Colorado IV. University of Colorado.

Cita Chicago Style (17a ed.)

Weber, William A. Additions to the Flora of Colorado IV. Boulder: University of Colorado, 1966.

Cita MLA (9a ed.)

Weber, William A. Additions to the Flora of Colorado IV. University of Colorado, 1966.