Cita APA (7th ed.)

VERNON, P. E. (1969). Intelligence and cultural Environmen. Methuen.

Cita Chicago (17th ed.)

VERNON, Philip E. Intelligence and Cultural Environmen. London: Methuen, 1969.

Cita MLA (9th ed.)

VERNON, Philip E. Intelligence and Cultural Environmen. Methuen, 1969.