Tuckman, B. W. (1999). Conducting educational research (5th ed.). Fort Worth, TX: Harcourt Brace College.
Παραπομπή Chicago StyleTuckman, Bruce W. Conducting Educational Research. 5th ed. Fort Worth, TX: Harcourt Brace College, 1999.
Παραπομπή MLATuckman, Bruce W. Conducting Educational Research. 5th ed. Fort Worth, TX: Harcourt Brace College, 1999.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.