Citazione Stile APA (7a Edizione)

Brown, M. (1988). World phosphates supply to the year 2000. OECD.

Citazione stile Chigago Style (17a edizione)

Brown, Martin. World Phosphates Supply to the Year 2000. Paris: OECD, 1988.

Citatione MLA (9a ed.)

Brown, Martin. World Phosphates Supply to the Year 2000. OECD, 1988.