APA (7th ed.) Citation

Arnalds, O., Archer, S., & Harris, B. L. (1990). Characterization and erosion of andisols in Iceland.

Chicago Style (17th ed.) Citation

Arnalds, Olafur, S. Archer, and B. L. Harris. Characterization and Erosion of Andisols in Iceland. 1990.

MLA (9th ed.) Citation

Arnalds, Olafur, et al. Characterization and Erosion of Andisols in Iceland. 1990.