Cita APA (7th ed.)

(2007). Selenium concentrations in middle Pennsylvanian coal-bearing strata in the central Appalachian Basin / by Sandra G. Neuzil [and others].

Cita Chicago (17th ed.)

Selenium Concentrations in Middle Pennsylvanian Coal-bearing Strata in the Central Appalachian Basin / by Sandra G. Neuzil [and Others]. 2007.

Cita MLA (9th ed.)

Selenium Concentrations in Middle Pennsylvanian Coal-bearing Strata in the Central Appalachian Basin / by Sandra G. Neuzil [and Others]. 2007.