Cita APA (7a ed.)

"CLAPP, C. H. HUMIC SUBSTANCES AND CHEMICAL CONTAMINANTS (-.).

Cita Chicago Style (17a ed.)

"CLAPP, C.E.; HAYES. HUMIC SUBSTANCES AND CHEMICAL CONTAMINANTS. -. MADISON.

Cita MLA (8a ed.)

"CLAPP, C.E.; HAYES. HUMIC SUBSTANCES AND CHEMICAL CONTAMINANTS. -.