Dyfyniad APA

Velasco, J., & Novero, R. (1951). Studies in foliar diagnosis: I. Nitrogen relations. College of Agriculture, University of the Philippines.

Dyfyniad Arddull Chicago

Velasco, J.R, and R.P Novero. Studies in Foliar Diagnosis: I. Nitrogen Relations. [Los Banos: College of Agriculture, University of the Philippines, 1951.

Dyfyniad MLA

Velasco, J.R, and R.P Novero. Studies in Foliar Diagnosis: I. Nitrogen Relations. College of Agriculture, University of the Philippines, 1951.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.