APA (7th ed.) Citation

Oak, J., & Higgins, J. A. (1994). Sotheby's guide to American folk art. Simon & Schuster.

Chicago Style (17th ed.) Citation

Oak, Jacquelyn, and James Allen Higgins. Sotheby's Guide to American Folk Art. New York, N.Y.: Simon & Schuster, 1994.

MLA (9th ed.) Citation

Oak, Jacquelyn, and James Allen Higgins. Sotheby's Guide to American Folk Art. Simon & Schuster, 1994.