Loy, M. P. A critical investigation of Philippine asbestos, obtained from Philippine Asbestos Mining Co., for Gooch crucibles.
Chicago-viite (17. p.)Loy, Maria Perfeccion. A Critical Investigation of Philippine Asbestos, Obtained from Philippine Asbestos Mining Co., for Gooch Crucibles.
MLA-viite (9. p.)Loy, Maria Perfeccion. A Critical Investigation of Philippine Asbestos, Obtained from Philippine Asbestos Mining Co., for Gooch Crucibles.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.