Citazione Stile APA (7a Edizione)

FREUND, J. E., & Frank J. Williams. (1964). Elementary business statistics: The modern approach. Prentice-Hall.

Citazione stile Chigago Style (17a edizione)

FREUND, John E., e Frank J. Williams. Elementary Business Statistics: The Modern Approach. London: Prentice-Hall, 1964.

Citatione MLA (9a ed.)

FREUND, John E., e Frank J. Williams. Elementary Business Statistics: The Modern Approach. Prentice-Hall, 1964.