APA (7th ed.) Citation

Berhanu, S., Cordaro, P. D., & Hounie, J. (2008). An Introduction to Involutive Structures.

Chicago Style (17th ed.) Citation

Berhanu, Shiferaw, Paulo D. Cordaro, and Jorge Hounie. An Introduction to Involutive Structures. 2008.

MLA (9th ed.) Citation

Berhanu, Shiferaw, et al. An Introduction to Involutive Structures. 2008.