Παραπομπή APA

Van Dalen, D. B. (1973). Understanding educational research. McGraw-Hill.

Παραπομπή Chicago Style

Van Dalen, Deobold B. Understanding Educational Research. New York: McGraw-Hill, 1973.

Παραπομπή MLA

Van Dalen, Deobold B. Understanding Educational Research. McGraw-Hill, 1973.