Preiss, S. (1998). NorthStar: Focus on listening and speaking, advanced. Longman.
Citace podle Chicago (17th ed.)Preiss, Sherry. NorthStar: Focus on Listening and Speaking, Advanced. Nueva York: Longman, 1998.
Citace podle MLA (9th ed.)Preiss, Sherry. NorthStar: Focus on Listening and Speaking, Advanced. Longman, 1998.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..