Urban, K. (1972). Spring wildflowers of the Blue Mountains. Blue Mountain Community College.
Style de citation Chicago (17e éd.)Urban, Karl. Spring Wildflowers of the Blue Mountains. Pendleton, Or.: Blue Mountain Community College, 1972.
Style de citation MLA (8e éd.)Urban, Karl. Spring Wildflowers of the Blue Mountains. Blue Mountain Community College, 1972.
Attention : ces citations peuvent ne pas être correctes à 100%.