APA način citiranja

Roberts, L., & Lorena Roberts. (2001). Happy Street: Teacher's book. Oxford,New York: Oxford University Press.

Čikaški stil citiranja

Roberts, Lorena, i Lorena Roberts. Happy Street: Teacher's Book. Oxford,New York: Oxford University Press, 2001.

MLA način citiranja

Roberts, Lorena, i Lorena Roberts. Happy Street: Teacher's Book. Oxford,New York: Oxford University Press, 2001.