APA (7th ed.) Citation

Yaacob, O., Tan, K. H., & Tham, K. C. (1979). Organic matter and nitrogen studies in Malaysian soils.

Chicago Style (17th ed.) Citation

Yaacob, Othman, Keh Huat Tan, and Kah Cheng Tham. Organic Matter and Nitrogen Studies in Malaysian Soils. 1979.

MLA (9th ed.) Citation

Yaacob, Othman, et al. Organic Matter and Nitrogen Studies in Malaysian Soils. 1979.