Schwartz, A. (1972). Hobbies: An introduction to crafts, collections, nature study, and other life-long pursuits. Drawings by Barbara Carmer Schwartz. Simon and Schuster.
Dyfyniad Arddull ChicagoSchwartz, Alvin. Hobbies: An Introduction to Crafts, Collections, Nature Study, and Other Life-long Pursuits. Drawings by Barbara Carmer Schwartz. New York: Simon and Schuster, 1972.
Dyfyniad MLASchwartz, Alvin. Hobbies: An Introduction to Crafts, Collections, Nature Study, and Other Life-long Pursuits. Drawings by Barbara Carmer Schwartz. Simon and Schuster, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.