Walz, B. J., & Bruce J. Walz. (2002). Introduction to EMS systems. Albany: Delmar Thomson Learning.
Čikaški stil citiranjaWalz, Bruce J., i Bruce J. Walz. Introduction to EMS Systems. Albany: Delmar Thomson Learning, 2002.
MLA način citiranjaWalz, Bruce J., i Bruce J. Walz. Introduction to EMS Systems. Albany: Delmar Thomson Learning, 2002.
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