Cita APA (7a ed.)

Richards, L. E., & LaCava, J. J. (1978). Business statistics: Why and when. McGraw-Hill.

Cita Chicago Style (17a ed.)

Richards, Larry E., y Jerry J. LaCava. Business Statistics: Why and When. New York [etc.]: McGraw-Hill, 1978.

Cita MLA (9a ed.)

Richards, Larry E., y Jerry J. LaCava. Business Statistics: Why and When. McGraw-Hill, 1978.