APA (7th ed.) Citation

Case, F. W., & Case, R. B. (1997). Trilliums. Timber Press.

Chicago Style (17th ed.) Citation

Case, Frederick W., and Roberta B. Case. Trilliums. Portland, Or: Timber Press, 1997.

MLA (9th ed.) Citation

Case, Frederick W., and Roberta B. Case. Trilliums. Timber Press, 1997.