APA (7th ed.) Citation

Manrique, L. A. (1991). LANDSYS: A land suitability assessment for food crop production. Manrique International Agrotech.

Chicago Style (17th ed.) Citation

Manrique, Luis A. LANDSYS: A Land Suitability Assessment for Food Crop Production. Honolulu, HI: Manrique International Agrotech, 1991.

MLA (9th ed.) Citation

Manrique, Luis A. LANDSYS: A Land Suitability Assessment for Food Crop Production. Manrique International Agrotech, 1991.