APA (7th ed.) Citation

Nunez Oritz, M. A. (1991). A profit-maximizing criterion of fertilizer usage for wheat producers in Paraguay. [publisher not identified].

Chicago Style (17th ed.) Citation

Nunez Oritz, Mario Antonio. A Profit-maximizing Criterion of Fertilizer Usage for Wheat Producers in Paraguay. [Place of publication not identified]: [publisher not identified], 1991.

MLA (9th ed.) Citation

Nunez Oritz, Mario Antonio. A Profit-maximizing Criterion of Fertilizer Usage for Wheat Producers in Paraguay. [publisher not identified], 1991.