Gillespie, R. J. “The Valence-Shell Electron-Pair Repulsion (VSEPR) Theory of Directed Valency”. Journal of Chemical Education, vol. 40, no. 6, 1963, p. 295, https://doi.org/10.1021/ed040p295.
Gillespie, R. J. (1963). The valence-shell electron-pair repulsion (VSEPR) theory of directed valency. Journal of Chemical Education, 40(6), 295. https://doi.org/10.1021/ed040p295
Gillespie, R. J. “The Valence-Shell Electron-Pair Repulsion (VSEPR) Theory of Directed Valency”. Journal of Chemical Education 40, no. 6 (1963): 295. https://doi.org/10.1021/ed040p295.
Gillespie RJ. The valence-shell electron-pair repulsion (VSEPR) theory of directed valency. Journal of Chemical Education. 1963;40(6):295.