APA (7th ed.) Citation

Tierra, M., & Tierra, L. (1981). East West master course in herbology. East West.

Chicago Style (17th ed.) Citation

Tierra, Michael, and Lesley Tierra. East West Master Course in Herbology. Santa Cruz, Calif.: East West, 1981.

MLA (8th ed.) Citation

Tierra, Michael, and Lesley Tierra. East West Master Course in Herbology. East West, 1981.

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