Παραπομπή σε μορφή APA (7η εκδ.)

ebrary, Inc, Hustrulid, W. A., McCarter, M. K., & Van Zyl, D. J. A. (2001). Slope stability in surface mining. Society for Mining, Metallurgy, and Exploration.

Παραπομπή σε μορφή Chicago (17η εκδ.)

ebrary, Inc, W. A. Hustrulid, M. K. McCarter, και Dirk J. A. Van Zyl. Slope Stability in Surface Mining. Littleton, Colo.: Society for Mining, Metallurgy, and Exploration, 2001.

Παραπομπή σε μορφή MLA (9th εκδ.)

ebrary, Inc, et al. Slope Stability in Surface Mining. Society for Mining, Metallurgy, and Exploration, 2001.