Παραπομπή APA

Laird, D. A., & Laird, E. (1961). Practical business psychology/3e (3rd ed.). New York.

Παραπομπή Chicago Style

Laird, Donald A., και Eleanor Laird. Practical Business Psychology/3e. 3rd ed. Mcgraw Hill: New York, 1961.

Παραπομπή MLA

Laird, Donald A., και Eleanor Laird. Practical Business Psychology/3e. 3rd ed. New York, 1961.