APA (7th ed.) Citation

Nehrling, A., & Nehrling, I. (1975). Peonies, outdoors and in. Dover Publications.

Chicago Style (17th ed.) Citation

Nehrling, Arno, and Irene Nehrling. Peonies, Outdoors and in. New York: Dover Publications, 1975.

MLA (9th ed.) Citation

Nehrling, Arno, and Irene Nehrling. Peonies, Outdoors and in. Dover Publications, 1975.