APA (7th ed.) Citation

Ahmed, O. H., Mohd Hanif, A. H., Abd Rahim, A., & Musa, M. H. (2003). Production of humic acid from pineapple leaf residue. The Haworth Press, Inc.

Chicago Style (17th ed.) Citation

Ahmed, Osumanu Haruna, Ahmad Husni Mohd Hanif, Anuar Abd Rahim, and Mohamed Hanafi Musa. Production of Humic Acid from Pineapple Leaf Residue. The Haworth Press, Inc, 2003.

MLA (9th ed.) Citation

Ahmed, Osumanu Haruna, et al. Production of Humic Acid from Pineapple Leaf Residue. The Haworth Press, Inc, 2003.