MLA

Robbinette, G. O. Evergreen Form Studies; Design Characteristics of Conifers. [S.l.]: Van Nostrand Reinhold company, 1983.

APA

Robbinette, G. O. (1983). Evergreen form studies; design characteristics of conifers. [S.l.]: Van Nostrand Reinhold company.

Chicago

Robbinette, G. O. Evergreen Form Studies; Design Characteristics of Conifers. [S.l.]: Van Nostrand Reinhold company, 1983.