APA (7e ed.) Bronvermelding

ebrary, Inc, World Health Organization, & World Plumbing Council. (2006). Health aspects of plumbing. World Health Organization ; World Plumbing Council.

Chicago (17e ed.) Bronvermelding

ebrary, Inc, World Health Organization, en World Plumbing Council. Health Aspects of Plumbing. Geneva : [S.l.]: World Health Organization ; World Plumbing Council, 2006.

MLA (9e ed.) Bronvermelding

ebrary, Inc, et al. Health Aspects of Plumbing. World Health Organization ; World Plumbing Council, 2006.