-. (1983). Grolier academic encyclopedia 9. Grolier Internasional.
Chicago Style (17th ed.) Citation-. Grolier Academic Encyclopedia 9. (sl): Grolier Internasional, 1983.
MLA引文-. Grolier Academic Encyclopedia 9. Grolier Internasional, 1983.
警告：這些引文格式不一定是100％准確.