Παραπομπή APA

Budd, W. C. (1970). Educational research by practitioners: Elementary case book. Harper & Row.

Παραπομπή Chicago Style

Budd, William C. Educational Research by Practitioners: Elementary Case Book. New York: Harper & Row, 1970.

Παραπομπή MLA

Budd, William C. Educational Research by Practitioners: Elementary Case Book. Harper & Row, 1970.