Cita APA

Giffen, R., Higgs, H., & Yule, G. U. (1913). Statistics. Macmillan and Co..

Chicago Style (17th ed.) Citation

Giffen, Robert, Henry Higgs, i G. Udny Yule. Statistics. London: Macmillan and Co., 1913.

Cita MLA

Giffen, Robert, et al. Statistics. Macmillan and Co., 1913.