APA-viite (7. p.)
Stephans, R. A., & Stephenson, J. (2004). System safety for the 21st century (Updated and rev. ed. of System safety 2000.). Wiley-Interscience.
Chicago-viite (17. p.)
Stephans, Richard A., ja Joe Stephenson. System Safety for the 21st Century. Updated and rev. ed. of System safety 2000. Hoboken, N.J.: Wiley-Interscience, 2004.
MLA-viite (9. p.)
Stephans, Richard A., ja Joe Stephenson. System Safety for the 21st Century. Updated and rev. ed. of System safety 2000. Wiley-Interscience, 2004.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.