APA (7th ed.) Citation

Walker, J. B., Mehlitz, D., & Jones, G. E. (1978). Notes on the ticks of Botswana. GTZ.

Chicago Style (17th ed.) Citation

Walker, Jane B., D. Mehlitz, and G. E. Jones. Notes on the Ticks of Botswana. Eschborn: GTZ, 1978.

MLA (9th ed.) Citation

Walker, Jane B., et al. Notes on the Ticks of Botswana. GTZ, 1978.