APA (7th ed.) Citation

Roberts, J. D. (1961). Notes on Molecular orbital calculations. W. A. Benjamin.

Chicago Style (17th ed.) Citation

Roberts, John D. Notes on Molecular Orbital Calculations. New York: W. A. Benjamin, 1961.

MLA (8th ed.) Citation

Roberts, John D. Notes on Molecular Orbital Calculations. W. A. Benjamin, 1961.