Sheppard, E., & Barnes, T. J. (2000). A Companion to Economic Geography. Blackwell Publishing Company.
Citazione stile Chigago Style (17a edizione)Sheppard, Eric, e Trevor J. Barnes. A Companion to Economic Geography. 108- Cowley Road, Oxford OX4 1Jf, UK: Blackwell Publishing Company, 2000.
Citatione MLA (9a ed.)Sheppard, Eric, e Trevor J. Barnes. A Companion to Economic Geography. Blackwell Publishing Company, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.