Παραπομπή σε μορφή APA (7η εκδ.)

ebrary, Inc, & Edgerton, W. W. (2008). Recommended contract practices for underground construction. Society for Mining, Metallurgy, and Exploration.

Παραπομπή σε μορφή Chicago (17η εκδ.)

ebrary, Inc, και William W. Edgerton. Recommended Contract Practices for Underground Construction. Littleton, Colo.: Society for Mining, Metallurgy, and Exploration, 2008.

Παραπομπή σε μορφή MLA (9th εκδ.)

ebrary, Inc, και William W. Edgerton. Recommended Contract Practices for Underground Construction. Society for Mining, Metallurgy, and Exploration, 2008.