APA način citiranja (7. izdanje)

Preston, R. (1982). Teaching world understanding. Prentice-Hall.

Čikaški stil citiranja (17. izdanje)

Preston, Ralph. Teaching World Understanding. New yark: Prentice-Hall, 1982.

MLA način citiranja (9. izdanje)

Preston, Ralph. Teaching World Understanding. Prentice-Hall, 1982.