APA način citiranja

Schaeffer, A. R. (2004). Past and Future Considerations for Heavy-Duty Diesel Engine Emissions. National Institue of Environmental Health Sciences.

Čikaški stil citiranja

Schaeffer, Allen R. Past and Future Considerations for Heavy-Duty Diesel Engine Emissions. National Institue of Environmental Health Sciences, 2004.

MLA način citiranja

Schaeffer, Allen R. Past and Future Considerations for Heavy-Duty Diesel Engine Emissions. National Institue of Environmental Health Sciences, 2004.