APA引文

GAFFNEY, J. S. Humic and fulvic acids / Jeffrey S.Gaffney, Nacy A. Marley. Washington.

Chicago Style (17th ed.) Citation

GAFFNEY, JEFFREY S. Humic and Fulvic Acids / Jeffrey S.Gaffney, Nacy A. Marley. Washington.

MLA引文

GAFFNEY, JEFFREY S. Humic and Fulvic Acids / Jeffrey S.Gaffney, Nacy A. Marley. Washington.

警告：這些引文格式不一定是100％准確.