APA (7th ed.) Citation

Orlov, D. S., Kothekar, V. S., & Tan, K. H. (1985). Humus acids of soils. A.A. Balkema.

Chicago Style (17th ed.) Citation

Orlov, D. S., V. S. Kothekar, and Kim H. Tan. Humus Acids of Soils. Rothedam: A.A. Balkema, 1985.

MLA (9th ed.) Citation

Orlov, D. S., et al. Humus Acids of Soils. A.A. Balkema, 1985.