APA-viite (7. p.)

Hughes, J. (2014). Life: Elementary. Student's book (1a. ed.). National Geographic Learning.

Chicago-viite (17. p.)

Hughes, John. Life: Elementary. Student's Book. 1a. ed. Hampshire: National Geographic Learning, 2014.

MLA-viite (9. p.)

Hughes, John. Life: Elementary. Student's Book. 1a. ed. National Geographic Learning, 2014.