APA-referens (7:e uppl.)

Combes, C., & Mehlhorn, H. (2016). Environmental Conditions. Encyclopedia of Parasitology, 949-951. https://doi.org/10.1007/978-3-662-43978-4_1074

Chicago-referens (17:e uppl.)

Combes, Claude, och Heinz Mehlhorn. "Environmental Conditions." Encyclopedia of Parasitology 2016: 949-951. https://doi.org/10.1007/978-3-662-43978-4_1074.

MLA-referens (9:e uppl.)

Combes, Claude, och Heinz Mehlhorn. "Environmental Conditions." Encyclopedia of Parasitology, 2016, pp. 949-951, https://doi.org/10.1007/978-3-662-43978-4_1074.