Citazione Stile APA (7a Edizione)

Harris, M., Mower, D., Sikorzynska, A., & Mrozowska, H. (2002). New opportunities, education for life: Upper intermediate. Student's book (1a. ed.). Pearson Education Limited.

Citazione stile Chigago Style (17a edizione)

Harris, Michael, David Mower, Anna Sikorzynska, e Hanna Mrozowska. New Opportunities, Education for Life: Upper Intermediate. Student's Book. 1a. ed. Harlow: Pearson Education Limited, 2002.

Citatione MLA (9a ed.)

Harris, Michael, et al. New Opportunities, Education for Life: Upper Intermediate. Student's Book. 1a. ed. Pearson Education Limited, 2002.