(1993). Chemistry for Civil services Examination Prelimanary Screening Test. Competition Review.
استشهاد بنمط شيكاغوChemistry for Civil Services Examination Prelimanary Screening Test. New Delhi: Competition Review, 1993.
MLA استشهادChemistry for Civil Services Examination Prelimanary Screening Test. Competition Review, 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.