(1932). Rhode Island and the sea / by Howard Willis Preston, A.M., director of State bureau of information. State of Rhode Island and Providence Plantations. Office of the Secretary of state. State bureau of information.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Rhode Island and the Sea / by Howard Willis Preston, A.M., Director of State Bureau of Information. State of Rhode Island and Providence Plantations. Office of the Secretary of State. State Bureau of Information. 1932.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Rhode Island and the Sea / by Howard Willis Preston, A.M., Director of State Bureau of Information. State of Rhode Island and Providence Plantations. Office of the Secretary of State. State Bureau of Information. 1932.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.