Cita APA (7th ed.)

Sheppard, E., & Barnes, T. J. (2000). A Companion to Economic Geography. Blackwell Publishing Company.

Cita Chicago (17th ed.)

Sheppard, Eric, i Trevor J. Barnes. A Companion to Economic Geography. 108- Cowley Road, Oxford OX4 1Jf, UK: Blackwell Publishing Company, 2000.

Cita MLA (9th ed.)

Sheppard, Eric, i Trevor J. Barnes. A Companion to Economic Geography. Blackwell Publishing Company, 2000.