Não informado. (2023). Rock Products and Building Materials. Maclean Hunter.
Chicago-Zitierstil (17. Ausg.)Não informado. Rock Products and Building Materials. Chicago, Ill: Maclean Hunter, 2023.
MLA-Zitierstil (8. Ausg.)Não informado. Rock Products and Building Materials. Maclean Hunter, 2023.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.