Dyfyniad APA
Helander, M. (2006). A Guide to Human Factors and Ergonomics (2nd ed.). CRC Press.
Dyfyniad Arddull Chicago
Helander, Martin. A Guide to Human Factors and Ergonomics. 2nd ed. New York: CRC Press, 2006.
Dyfyniad MLA
Helander, Martin. A Guide to Human Factors and Ergonomics. 2nd ed. CRC Press, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.