Παραπομπή APA

Norman, A. G., & Pierre, W. H. (1953). Soil and fertilizers phosphorous in crop nutrition. Academic press.

Παραπομπή Chicago Style

Norman, A G., και W H. Pierre. Soil and Fertilizers Phosphorous in Crop Nutrition. Newyork: Academic press, 1953.

Παραπομπή MLA

Norman, A G., και W H. Pierre. Soil and Fertilizers Phosphorous in Crop Nutrition. Academic press, 1953.