APA (7th ed.) Citation

Palmer, E., & Collett, R. (1977). A field guide to the trees of Southern Africa. Collins.

Chicago Style (17th ed.) Citation

Palmer, Eve, and Rhona Collett. A Field Guide to the Trees of Southern Africa. London [etc.]: Collins, 1977.

MLA (9th ed.) Citation

Palmer, Eve, and Rhona Collett. A Field Guide to the Trees of Southern Africa. Collins, 1977.