Cita APA (7a ed.)

Armour, R. (1962). It all started with Columbus. Cox & Wyman Ltd.

Cita Chicago Style (17a ed.)

Armour, Richard. It All Started with Columbus. London: Cox & Wyman Ltd, 1962.

Cita MLA (9a ed.)

Armour, Richard. It All Started with Columbus. Cox & Wyman Ltd, 1962.