Cita APA (7th ed.)

Childs, W. H. J. (1972). Physical constants selected for students (9th ed.). Chapman and Hall.

Cita Chicago (17th ed.)

Childs, W. H. J. Physical Constants Selected for Students. 9th ed. London: Chapman and Hall, 1972.

Cita MLA (9th ed.)

Childs, W. H. J. Physical Constants Selected for Students. 9th ed. Chapman and Hall, 1972.