Arunkumar S & Sasikumar Nair. (1997). Azotobacter and Azospirillum Inoculants for Nitrogen Economy in Vegetable Cultivation. Department of Plant Pathology, College of Agriculture.
Chicago Edition CitationArunkumar S and Sasikumar Nair. Azotobacter and Azospirillum Inoculants for Nitrogen Economy in Vegetable Cultivation. Vellayani: Department of Plant Pathology, College of Agriculture, 1997.
MLA引文Arunkumar S and Sasikumar Nair. Azotobacter and Azospirillum Inoculants for Nitrogen Economy in Vegetable Cultivation. Department of Plant Pathology, College of Agriculture, 1997.
警告:這些引文格式不一定是100%准確.