Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

Warning: These citations may not always be 100% accurate.