Dyfyniad APA

Roosevelt, T., & Harbaugh, W. H. (1967). Writings. Bobbs-Merrill.

Dyfyniad Arddull Chicago

Roosevelt, Theodore, and William Henry Harbaugh. Writings. Indianapolis: Bobbs-Merrill, 1967.

Dyfyniad MLA

Roosevelt, Theodore, and William Henry Harbaugh. Writings. Bobbs-Merrill, 1967.

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