Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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