Schramm, M. (1987). Control of Xenopus laevis (Amphibia: Pipidae) in fish ponds with observations on its threat to fish fry and fingerlings. Water SA (Pretoria), 13, 53–56.

Schramm, M. (1987). Control of Xenopus laevis (Amphibia: Pipidae) in fish ponds with observations on its threat to fish fry and fingerlings. Water SA (Pretoria), 13, 53–56.