Gaya APA

O.Pennock, J. (2001). Piping Engineering leadership for process plant project (2001). Butterwoth: Gulf Professional Publishing Butterworth-Heinemann.

Gaya MLA

O.Pennock, James. "Piping Engineering leadership for process plant project". 2001 Butterwoth: Gulf Professional Publishing Butterworth-Heinemann, 2001. Text.