Gaya APA

Stephans, R, A. (2004). System Safety for the 21st Century: The Updated and Revised Edition of System Safety 2000 (-). New York: John Wiley & Sons, Inc.

Gaya MLA

Stephans, Richard, A. "System Safety for the 21st Century: The Updated and Revised Edition of System Safety 2000". - New York: John Wiley & Sons, Inc, 2004. Book.