American Chemical Society. Division of Industrial and Engineering Chemistry, Gaffney, J. S., Marley, N. A., & Clark, S. B. (1996). Humic and fulvic acids: Isolation, structure, and environmental role. American Chemical Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAmerican Chemical Society. Division of Industrial and Engineering Chemistry, Jeffrey S. Gaffney, Nancy A. Marley, और Sue B. Clark. Humic and Fulvic Acids: Isolation, Structure, and Environmental Role. Washington, DC: American Chemical Society, 1996.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAmerican Chemical Society. Division of Industrial and Engineering Chemistry, et al. Humic and Fulvic Acids: Isolation, Structure, and Environmental Role. American Chemical Society, 1996.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.