APA استشهاد

Roberts, W. O., & Lansford, H. (1979). The climate mandate. W.H. Freeman.

استشهاد بنمط شيكاغو

Roberts, Walter Orr, و Henry Lansford. The Climate Mandate. San Francisco: W.H. Freeman, 1979.

MLA استشهاد

Roberts, Walter Orr, و Henry Lansford. The Climate Mandate. W.H. Freeman, 1979.