Indian Standards Institution. (1968). Indian Standard: Specification for Plastic Water-Closet Seats and Covers. Indian Standards Institution.
استشهاد بنمط شيكاغوIndian Standards Institution. Indian Standard: Specification for Plastic Water-Closet Seats and Covers. N.Delhi: Indian Standards Institution, 1968.
MLA استشهادIndian Standards Institution. Indian Standard: Specification for Plastic Water-Closet Seats and Covers. Indian Standards Institution, 1968.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.