APA (7th ed.) Citation

Roper, J. (1958). Labour problems in West Africa. London: Penguin Books.

Chicago Style (17th ed.) Citation

Roper, J.I. Labour Problems in West Africa. London: Penguin Books, 1958.

MLA (8th ed.) Citation

Roper, J.I. Labour Problems in West Africa. London: Penguin Books, 1958.

Warning: These citations may not always be 100% accurate.