APA (7th ed.) Citation

Hillegass, L. L. (2000). Flower gardening in the hot Midwest: USDA zone 5 and lower zone 4. University of Illinois Press.

Chicago Style (17th ed.) Citation

Hillegass, L. L. Flower Gardening in the Hot Midwest: USDA Zone 5 and Lower Zone 4. Urbana, Ill.: University of Illinois Press, 2000.

MLA (9th ed.) Citation

Hillegass, L. L. Flower Gardening in the Hot Midwest: USDA Zone 5 and Lower Zone 4. University of Illinois Press, 2000.