Gupta, O. P. (1981). Chemical Engineering: Objective Type Questions and Answer. Khanna Publishers.
استشهاد بنمط شيكاغوGupta, Om Prakash. Chemical Engineering: Objective Type Questions and Answer. Delhi: Khanna Publishers, 1981.
MLA استشهادGupta, Om Prakash. Chemical Engineering: Objective Type Questions and Answer. Khanna Publishers, 1981.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.