APA Style

HURST, J. WILLIS, WALKER, H KENNETH. (1972). The problem oriented system (1). New York: MEDCOM PRESS.

Chicago Style

HURST, J. WILLIS, WALKER, H KENNETH. The problem oriented system. 1 New York: MEDCOM PRESS, 1972. TXB.

MLA Style

HURST, J. WILLIS, WALKER, H KENNETH. The problem oriented system. 1 New York: MEDCOM PRESS, 1972. TXB.

Turabian Style

HURST, J. WILLIS, WALKER, H KENNETH. The problem oriented system. 1 New York: MEDCOM PRESS, 1972. TXB.