APA (7th ed.) Citation

Valleau, J. M., & Schroeder, J. D. (1998). Perennial gardening guide (3rd ed.). Valleybrook International Ventures Inc..

Chicago Style (17th ed.) Citation

Valleau, John M., and John D. Schroeder. Perennial Gardening Guide. 3rd ed. Abbotsford, B.C.: Valleybrook International Ventures Inc., 1998.

MLA (9th ed.) Citation

Valleau, John M., and John D. Schroeder. Perennial Gardening Guide. 3rd ed. Valleybrook International Ventures Inc., 1998.