Snodgrass, R. E.. "X. The Symphyla". Textbook of Arthropod Anatomy, Ithaca, NY: Cornell University Press, 2019, pp. 257-270. https://doi.org/10.7591/9781501740800-012
Snodgrass, R. (2019). X. The Symphyla. In Textbook of Arthropod Anatomy (pp. 257-270). Ithaca, NY: Cornell University Press. https://doi.org/10.7591/9781501740800-012
Snodgrass, R. E.. "X. The Symphyla" In Textbook of Arthropod Anatomy, 257-270. Ithaca, NY: Cornell University Press, 2019. https://doi.org/10.7591/9781501740800-012