APA (7th ed.) Citation

Harkness, J. L. (1979). The world's favorite roses and how to grow them. McGraw-Hill.

Chicago Style (17th ed.) Citation

Harkness, Jack Leigh. The World's Favorite Roses and How to Grow Them. New York: McGraw-Hill, 1979.

MLA (9th ed.) Citation

Harkness, Jack Leigh. The World's Favorite Roses and How to Grow Them. McGraw-Hill, 1979.