Gaya APA

Ballhausen, C, J., Gray, H, B. (1980). Molecular Electronic Structures: An Introduction . New York: The Benjami/Cummings Publishing Company, Inc..

Gaya MLA

Ballhausen, Carl, J.., Gray, Harry, B.. "Molecular Electronic Structures: An Introduction". New York: The Benjami/Cummings Publishing Company, Inc., 1980. e-book.