Pence, G. E., & Gregory E. Pence. (2007). The. Boston: McGraw-Hill.
Chicago Style CitationPence, Gregory E., i Gregory E. Pence. The. Boston: McGraw-Hill, 2007.
Cita MLAPence, Gregory E., i Gregory E. Pence. The. Boston: McGraw-Hill, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.