APA (7th ed.) Citation

Nehrling, A., & Nehrling, I. (1958). An easy guide to house plants. Heathside Press.

Chicago Style (17th ed.) Citation

Nehrling, Arno, and Irene Nehrling. An Easy Guide to House Plants. New York: Heathside Press, 1958.

MLA (9th ed.) Citation

Nehrling, Arno, and Irene Nehrling. An Easy Guide to House Plants. Heathside Press, 1958.

Warning: These citations may not always be 100% accurate.