APA (7th ed.) Zitazioa
ebrary, Inc, & Madronová, L. (2011). Humic acids from raw materials of the Czech Republic. Nova Science Publishers.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, eta Libuše Madronová. Humic Acids from Raw Materials of the Czech Republic. New York: Nova Science Publishers, 2011.
MLA (9th ed.) Zitazioa
ebrary, Inc, eta Libuše Madronová. Humic Acids from Raw Materials of the Czech Republic. Nova Science Publishers, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.