APA Style

NAVAREZ, D, C. (1988). Effect of weeding and tillage on weeds and crop yield in a rice-based cropping system . : University of the Philippines at Los Banos.

MLA Style

NAVAREZ, Domingo, C.. "Effect of weeding and tillage on weeds and crop yield in a rice-based cropping system". : University of the Philippines at Los Banos, 1988. Electronic resources.