APA (7e ed.) Bronvermelding

Peterson's Guides, Inc, & University Continuing Education Association. (1997). Peterson's distance learning programs (2nd ed.). Peterson's.

Chicago (17e ed.) Bronvermelding

Peterson's Guides, Inc, en University Continuing Education Association. Peterson's Distance Learning Programs. 2nd ed. Princeton, N.J: Peterson's, 1997.

MLA (9e ed.) Bronvermelding

Peterson's Guides, Inc, en University Continuing Education Association. Peterson's Distance Learning Programs. 2nd ed. Peterson's, 1997.