Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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