ISI. (1970). Indian standard methods for estimation of nicotine acid niacin in food stuffs. Indian standards institution.
استشهاد بنمط شيكاغوISI. Indian Standard Methods for Estimation of Nicotine Acid Niacin in Food Stuffs. Indian standards institution, 1970.
MLA استشهادISI. Indian Standard Methods for Estimation of Nicotine Acid Niacin in Food Stuffs. Indian standards institution, 1970.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.