WESTERMAN, R. L. (1990). Soil testing and analysis. Soil Science sociaty America.
Chicago Style (17th ed.) CitationWESTERMAN, R. L. Soil Testing and Analysis. Soil Science sociaty America, 1990.
MLA引文WESTERMAN, R. L. Soil Testing and Analysis. Soil Science sociaty America, 1990.
警告：這些引文格式不一定是100％准確.