Cita APA (7th ed.)

Lachapelle , E. R. (1969). Field guide to snow crystals. University of washington pr.

Cita Chicago (17th ed.)

Lachapelle , Edward R. Field Guide to Snow Crystals. London: University of washington pr, 1969.

Cita MLA (9th ed.)

Lachapelle , Edward R. Field Guide to Snow Crystals. University of washington pr, 1969.