APA (7th ed.) Citation

Aliyu, M., Al-Sultan, K., & unknown. (1998). Four-dimensional representation and collision detection forpolytopic objects.

Chicago Style (17th ed.) Citation

Aliyu, M.D.S, K.S Al-Sultan, and unknown. Four-dimensional Representation and Collision Detection Forpolytopic Objects. 1998.

MLA (9th ed.) Citation

Aliyu, M.D.S, et al. Four-dimensional Representation and Collision Detection Forpolytopic Objects. 1998.