Evergreen form studies :
design characteristics of conifers /
drawings by Susan Van Gieson ; compiled and collected by Gary O. Robinette.

APA Citation

Van Gieson, S., Robinette, G. O. (1983). Evergreen form studies: design characteristics of conifers. New York: Van Nostrand Reinhold Co..

MLA Citation

Van Gieson, Susan, and Gary O Robinette. Evergreen Form Studies: Design Characteristics of Conifers. New York: Van Nostrand Reinhold Co., 1983.

Warning: These citations may not always be complete (especially for serials).