Παραπομπή APA

Butcher, H. (1968). Human Intelligence: Its Nature and Assessment. Methuen.

Παραπομπή Chicago Style

Butcher, H.J. Human Intelligence: Its Nature and Assessment. London: Methuen, 1968.

Παραπομπή MLA

Butcher, H.J. Human Intelligence: Its Nature and Assessment. Methuen, 1968.