Cita APA (7th ed.)
Ralph, J., O'Neill, R., & Winton, J. (2015). A practical introduction to index numbers. Wiley.
Cita Chicago (17th ed.)
Ralph, Jeff, Rob O'Neill, i Joe Winton. A Practical Introduction to Index Numbers. Chichester, West Sussex, England: Wiley, 2015.
Cita MLA (9th ed.)
Ralph, Jeff, et al. A Practical Introduction to Index Numbers. Wiley, 2015.
Atenció: Aquestes cites poden no estar 100% correctes.