APA (7th ed.) Citation

Posnett, N. W., Reilly, P. M., & Whitfield, P. (1971). Nigeria. Land Resources Division.

Chicago Style (17th ed.) Citation

Posnett, Norman W., Philip M. Reilly, and Peter Whitfield. Nigeria. Surbiton, Surrey: Land Resources Division, 1971.

MLA (9th ed.) Citation

Posnett, Norman W., et al. Nigeria. Land Resources Division, 1971.