Dyfyniad APA
Chem, P. (1968). Chemistry: Inorganic organic and biological. Barnes & Noble books.
Dyfyniad Arddull Chicago
Chem, Philip. Chemistry: Inorganic Organic and Biological. London: Barnes & Noble books, 1968.
Dyfyniad MLA
Chem, Philip. Chemistry: Inorganic Organic and Biological. Barnes & Noble books, 1968.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.