Cita APA (7th ed.)

ebrary, Inc, & Madronová, L. (2011). Humic acids from raw materials of the Czech Republic. Nova Science Publishers.

Cita Chicago (17th ed.)

ebrary, Inc, i Libuše Madronová. Humic Acids from Raw Materials of the Czech Republic. New York: Nova Science Publishers, 2011.

Cita MLA (9th ed.)

ebrary, Inc, i Libuše Madronová. Humic Acids from Raw Materials of the Czech Republic. Nova Science Publishers, 2011.