APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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