एपीए उद्धरण

Ernst, G. W., & Newell, A. (1969). GPS: A case study in generality and problem solving.

शिकागो स्टाइल उद्धरण

Ernst, George W., और Allen Newell. GPS: A Case Study in Generality and Problem Solving. 1969.

एमएलए उद्धरण

Ernst, George W., और Allen Newell. GPS: A Case Study in Generality and Problem Solving. 1969.