Cita APA (7a ed.)

Sajwan K. S. Kenneth S., Alva A. K. Ashok K., & Keefer R. F. Robert F. (1999). Biogeochemistry of Trace Elements in Coal and Coal Combustion Byproducts. New York, Kluwer Academic, 1999.

Cita Chicago Style (17a ed.)

Sajwan K. S. Kenneth S., Alva A. K. Ashok K., y Keefer R. F. Robert F. Biogeochemistry of Trace Elements in Coal and Coal Combustion Byproducts. New York, Kluwer Academic, 1999, 1999.

Cita MLA (9a ed.)

Sajwan K. S. Kenneth S., et al. Biogeochemistry of Trace Elements in Coal and Coal Combustion Byproducts. New York, Kluwer Academic, 1999, 1999.