APA citiranje

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 citiranje

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

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