Citazione Stile APA (7a Edizione)

Johnson, D. A., & Glenn, W. H. (1960). Understanding numeration systems. Webster.

Citazione stile Chigago Style (17a edizione)

Johnson, Donovan A., e William H. Glenn. Understanding Numeration Systems. Saint Louis: Webster, 1960.

Citatione MLA (9a ed.)

Johnson, Donovan A., e William H. Glenn. Understanding Numeration Systems. Webster, 1960.