Pople, J. A., & Beveridge, D. L. (1970). Approximate molecular orbital theory. McGraw-Hill.

Pople, John A., and David L. Beveridge. Approximate Molecular Orbital Theory. New York: McGraw-Hill, 1970.

Pople, John A., and David L. Beveridge. Approximate Molecular Orbital Theory. McGraw-Hill, 1970.