Freedman, B., & Freedman, N. (2002). The search for joyful (Berkley hardcover edition.). Berkley Books.
Dyfyniad Arddull ChicagoFreedman, Benedict, and Nancy Freedman. The Search for Joyful. Berkley hardcover edition. New York: Berkley Books, 2002.
Dyfyniad MLAFreedman, Benedict, and Nancy Freedman. The Search for Joyful. Berkley hardcover edition. Berkley Books, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.