Cita APA (7th ed.)
White, R. (1990). Africa in focus: A physical, human and economi geography. Macmillan.
Cita Chicago (17th ed.)
White, Richard. Africa in Focus: A Physical, Human and Economi Geography. London: Macmillan, 1990.
Cita MLA (9th ed.)
White, Richard. Africa in Focus: A Physical, Human and Economi Geography. Macmillan, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.