Cita APA (7a ed.)

Hsu, G., Negro, G., & Koçak, O. (2010). Categories in markets: Origins and evolution. Emerald Group.

Cita Chicago Style (17a ed.)

Hsu, Greta, Giacomo Negro, y Özgecan Koçak. Categories in Markets: Origins and Evolution. Bingley [England]: Emerald Group, 2010.

Cita MLA (8a ed.)

Hsu, Greta, et al. Categories in Markets: Origins and Evolution. Emerald Group, 2010.