Cita APA (7a ed.)

Europa Publications Limited & Lea, D. (2002). Agricultural and mineral commodities year book. Europa Publications.

Cita Chicago Style (17a ed.)

Europa Publications Limited y David Lea. Agricultural and Mineral Commodities Year Book. London: Europa Publications, 2002.

Cita MLA (8a ed.)

Europa Publications Limited y David Lea. Agricultural and Mineral Commodities Year Book. Europa Publications, 2002.