Cita APA (7th ed.)

SYKES, P. (1981). A Guidebook to mechanism in organic. Longman.

Cita Chicago (17th ed.)

SYKES, Peter. A Guidebook to Mechanism in Organic. New Delhi, Orient: Longman, 1981.

Cita MLA (9th ed.)

SYKES, Peter. A Guidebook to Mechanism in Organic. Longman, 1981.