APA (7th ed.) Citation

Klug, J., & Sundman, D. J. (2007). 100 greatest American stamps. Whitman Publishing.

Chicago Style (17th ed.) Citation

Klug, Janet, and Donald J. Sundman. 100 Greatest American Stamps. Atlanta: Whitman Publishing, 2007.

MLA (9th ed.) Citation

Klug, Janet, and Donald J. Sundman. 100 Greatest American Stamps. Whitman Publishing, 2007.

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