Youngen, G. (1987). Indoor radon: A selected and annotated bibliography. Council of Planning Librarians.
Chicago-Zitierstil (17. Ausg.)Youngen, Gregory. Indoor Radon: A Selected and Annotated Bibliography. Chicago, Ill: Council of Planning Librarians, 1987.
MLA-Zitierstil (9. Ausg.)Youngen, Gregory. Indoor Radon: A Selected and Annotated Bibliography. Council of Planning Librarians, 1987.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.