Citazione APA

Vernon, P. E. (1971). Certificate of secondary education: Introduction to objective type examination.

Stile di citazione Chicago

Vernon, Philip E. Certificate of Secondary Education: Introduction to Objective Type Examination. 1971.

Citazione MLA

Vernon, Philip E. Certificate of Secondary Education: Introduction to Objective Type Examination. 1971.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.