, H. s. i. s. Humic substances in soil and crop sciences: Selected readings#Editor P. MacCarthy .... (et.al.). American Society of Agronomy Inc.
Chicago Style (17th ed.) Citation, Humic substances in soil. Humic Substances in Soil and Crop Sciences: Selected Readings#Editor P. MacCarthy .... (et.al.). American Society of Agronomy Inc.
MLA (8th ed.) Citation, Humic substances in soil. Humic Substances in Soil and Crop Sciences: Selected Readings#Editor P. MacCarthy .... (et.al.). American Society of Agronomy Inc.
Warning: These citations may not always be 100% accurate.