APA (7th ed.) Citation

Widyan, O. (1979). Numerical Index for agriculture. Royal Scientific Society, Economics Department.

Chicago Style (17th ed.) Citation

Widyan, Omar. Numerical Index for Agriculture. Amman: Royal Scientific Society, Economics Department, 1979.

MLA (9th ed.) Citation

Widyan, Omar. Numerical Index for Agriculture. Royal Scientific Society, Economics Department, 1979.

Warning: These citations may not always be 100% accurate.