APA (7th ed.) Citation

Farag, A., Shwehdi, M., Belhadj, C., Cheng, T., Penn, D., & unknown. (1998). Air terminations for lightning protection of structures.

Chicago Style (17th ed.) Citation

Farag, A.S, M. Shwehdi, C.A Belhadj, T.C Cheng, D. Penn, and unknown. Air Terminations for Lightning Protection of Structures. 1998.

MLA (9th ed.) Citation

Farag, A.S, et al. Air Terminations for Lightning Protection of Structures. 1998.