APA aipamena

Perles, B., Freund, J. E., Sullivan, C., & Williams, F. J. (1969). Freund and Williams' modern business statistics. Phoenix Press.

Chicago Style aipamena

Perles, Benjamin, John E. Freund, Charles Sullivan, and Frank Jefferson Williams. Freund and Williams' Modern Business Statistics. Quezon City: Phoenix Press, 1969.

MLA aipamena

Perles, Benjamin, et al. Freund and Williams' Modern Business Statistics. Phoenix Press, 1969.