International Sanitary Conference Washington. (1881). Proceedings of the International Sanitary Conference: Provided for by joint resolution of the Senate and House of Representatives in the early part of 1881. Govt. Print. Off..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Sanitary Conference Washington. Proceedings of the International Sanitary Conference: Provided for by Joint Resolution of the Senate and House of Representatives in the Early Part of 1881. Washington: Govt. Print. Off., 1881.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)International Sanitary Conference Washington. Proceedings of the International Sanitary Conference: Provided for by Joint Resolution of the Senate and House of Representatives in the Early Part of 1881. Govt. Print. Off., 1881.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.