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APA Format

Schutchfield, F. Douglas ; Keck, C. William . (1997, 2003). Principles of public health practice. Albany, NY : Delmar

MLA Format

Schutchfield, F. Douglas; Keck, C. William . Principles of public health practice. Albany, NY : Delmar, 1997, 2003

Australian/Harvard Format

Schutchfield, F. Douglas ; Keck, C. William . 1997, 2003. Principles of public health practice. Delmar, Albany, NY

Warning: These citations may not always be 100% accurate.