Cita APA (7th ed.)

Challenge Program on Water and Food & Consultative Group on International Agricultural Research. (2002). Challenge programs on water and food: Background papers to the full proposal. CGIAR.

Cita Chicago (17th ed.)

Challenge Program on Water and Food i Consultative Group on International Agricultural Research. Challenge Programs on Water and Food: Background Papers to the Full Proposal. Colombo: CGIAR, 2002.

Cita MLA (9th ed.)

Challenge Program on Water and Food i Consultative Group on International Agricultural Research. Challenge Programs on Water and Food: Background Papers to the Full Proposal. CGIAR, 2002.

Atenció: Aquestes cites poden no estar 100% correctes.