APA (7th ed.) Citation

Ek, M., Lennholm, H., Lindblad, G., Iversen, T., & Gray, D. G. Photochromic Behavior of UV-Irradiated Mechanical Pulps.

Chicago Style (17th ed.) Citation

Ek, M., H. Lennholm, G. Lindblad, T. Iversen, and D. G. Gray. Photochromic Behavior of UV-Irradiated Mechanical Pulps.

MLA (9th ed.) Citation

Ek, M., et al. Photochromic Behavior of UV-Irradiated Mechanical Pulps.