Παραπομπή APA

Laird, D. A., & Laird, E. C. (1951). Sizing up people. Hill Book company.

Παραπομπή Chicago Style

Laird, Donald A., και Eleanor C. Laird. Sizing Up People. London: Hill Book company, 1951.

Παραπομπή MLA

Laird, Donald A., και Eleanor C. Laird. Sizing Up People. Hill Book company, 1951.