APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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