APA (7th ed.) Citation

Pala, H., Gama, F. M., & Mota, M. (1998). Preliminary studies on enzymatic deinking.

Chicago Style (17th ed.) Citation

Pala, H., F. M. Gama, and M. Mota. Preliminary Studies on Enzymatic Deinking. 1998.

MLA (8th ed.) Citation

Pala, H., et al. Preliminary Studies on Enzymatic Deinking. 1998.