Citazione APA

Horner, C. E., & Booth, E. S. (1953). Spring flowers of southeastern Washington and northeastern Oregon. Walla Walla College, Dept. of Biological Sciences.

Stile di citazione Chicago

Horner, Chester E., e Ernest S. Booth. Spring Flowers of Southeastern Washington and Northeastern Oregon. College Place, Wash.: Walla Walla College, Dept. of Biological Sciences, 1953.

Citazione MLA

Horner, Chester E., e Ernest S. Booth. Spring Flowers of Southeastern Washington and Northeastern Oregon. Walla Walla College, Dept. of Biological Sciences, 1953.