Cita APA (7a ed.)

Giffen, R. (1904). Economic inquiries and studies. George Bell and Sons.

Cita Chicago Style (17a ed.)

Giffen, Robert. Economic Inquiries and Studies. London: George Bell and Sons, 1904.

Cita MLA (9a ed.)

Giffen, Robert. Economic Inquiries and Studies. George Bell and Sons, 1904.