APA (7th ed.) Citation

Poppeliers, J. C., Chambers, S. A., & Schwartz, N. B. (1977). What style is it? The Preservation Press, National Trust for Historic Preservation.

Chicago Style (17th ed.) Citation

Poppeliers, John C., S. Allen Chambers, and Nancy B. Schwartz. What Style Is It? Washington, D. C.: The Preservation Press, National Trust for Historic Preservation, 1977.

MLA (9th ed.) Citation

Poppeliers, John C., et al. What Style Is It? The Preservation Press, National Trust for Historic Preservation, 1977.