Citazione APA

Coulter, J. M. (1891). Botany of western Texas: A manual of the phanegrams and pteridophytes of western Texas. Govt.print.off..

Stile di citazione Chicago

Coulter, John Merle. Botany of Western Texas: A Manual of the Phanegrams and Pteridophytes of Western Texas. Washington: Govt.print.off., 1891.

Citazione MLA

Coulter, John Merle. Botany of Western Texas: A Manual of the Phanegrams and Pteridophytes of Western Texas. Govt.print.off., 1891.