Cita APA (7th ed.)

Penn, M. R., & Parker, P. J. (2012). Introduction to infrastructure: An introduction to civil and environmental engineering. John Wiley & Sons, Inc.

Cita Chicago (17th ed.)

Penn, Michael R., i Philip J. Parker. Introduction to Infrastructure: An Introduction to Civil and Environmental Engineering. Hoboken, N.J: John Wiley & Sons, Inc, 2012.

Cita MLA (9th ed.)

Penn, Michael R., i Philip J. Parker. Introduction to Infrastructure: An Introduction to Civil and Environmental Engineering. John Wiley & Sons, Inc, 2012.