APA (7th ed.) Citation

Steffens, F., Fangueiro, R., Subramani, P., & Rana, S. (2013). Auxetic materials: General concepts.

Chicago Style (17th ed.) Citation

Steffens, F., Raúl Fangueiro, P. Subramani, and S. Rana. Auxetic Materials: General Concepts. 2013.

MLA (8th ed.) Citation

Steffens, F., et al. Auxetic Materials: General Concepts. 2013.