APA
Ketelaar J. a. a., . (1958). Chemical constitution an introduction to the theory of the chemical bond. London: Elsevier Publishing Company.
Chicago
Ketelaar J a a, . 1958. Chemical constitution an introduction to the theory of the chemical bond. London: Elsevier Publishing Company.
Harvard
Ketelaar J. a. a., . (1958). Chemical constitution an introduction to the theory of the chemical bond. London: Elsevier Publishing Company.
MLA
Ketelaar J a a, . Chemical constitution an introduction to the theory of the chemical bond. London: Elsevier Publishing Company. 1958.