APA način citiranja (7. izdanje)

OPUTA, C. O., RENDIG, V. V., & McCOMB, E. A. (2020). SULPHUR NUTRITION OF THE CORN PLANT: I. EFFECT ON THE NITRATE - NITROGEN FRACTION. The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria.

Čikaški stil citiranja (17. izdanje)

OPUTA, C. O., V. V. RENDIG, i E. A. McCOMB. SULPHUR NUTRITION OF THE CORN PLANT: I. EFFECT ON THE NITRATE - NITROGEN FRACTION. The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria, 2020.

MLA način citiranja (9. izdanje)

OPUTA, C. O., et al. SULPHUR NUTRITION OF THE CORN PLANT: I. EFFECT ON THE NITRATE - NITROGEN FRACTION. The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria, 2020.