Dyfyniad APA

Tyler, N., Ligibel, T., & Tyler, I. R. (2009). Historic preservation: An introduction to its history, principles, and practice (2nd edition.). W.W. Norton & Co.

Dyfyniad Arddull Chicago

Tyler, Norman, Ted Ligibel, and Ilene R. Tyler. Historic Preservation: An Introduction to Its History, Principles, and Practice. 2nd edition. New York: W.W. Norton & Co, 2009.

Dyfyniad MLA

Tyler, Norman, et al. Historic Preservation: An Introduction to Its History, Principles, and Practice. 2nd edition. W.W. Norton & Co, 2009.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.