(1880). N.W. Ayer & son's Directory of newspapers and periodicals; a guide to publications printed in the United States and possessions, the dominion of Canada, Bermuda, Cuba and the West Indeis; including maps; descriptions of the publications; the states, cities and towns in which they are published; complete classified list. N.W. Ayer.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)N.W. Ayer & Son's Directory of Newspapers and Periodicals; a Guide to Publications Printed in the United States and Possessions, the Dominion of Canada, Bermuda, Cuba and the West Indeis; Including Maps; Descriptions of the Publications; the States, Cities and Towns in Which They Are Published; Complete Classified List. Philadelphia: N.W. Ayer, 1880.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)N.W. Ayer & Son's Directory of Newspapers and Periodicals; a Guide to Publications Printed in the United States and Possessions, the Dominion of Canada, Bermuda, Cuba and the West Indeis; Including Maps; Descriptions of the Publications; the States, Cities and Towns in Which They Are Published; Complete Classified List. N.W. Ayer, 1880.