APA citiranje

Betta, L., & DuPaquier Sardinas, C. (1998). NorthStar: Focus on reading and writing, intermediate. Longman.

Chicago Style (17th ed.) Citation

Betta, Laurie, and Carolyn DuPaquier Sardinas. NorthStar: Focus on Reading and Writing, Intermediate. Nueva York: Longman, 1998.

MLA citiranje

Betta, Laurie, and Carolyn DuPaquier Sardinas. NorthStar: Focus on Reading and Writing, Intermediate. Longman, 1998.