Παραπομπή APA

Bray, L. (1968). N. W. Ayer & Son's directory: Newspapers and periodicals 14968 : (continuing american newspaper annual and directory). Philadelphia, PA: N. W. Ayer & Son.

Παραπομπή Chicago Style

Bray, Leonard. N. W. Ayer & Son's Directory: Newspapers and Periodicals 14968 : (continuing American Newspaper Annual and Directory). Philadelphia, PA: N. W. Ayer & Son, 1968.

Παραπομπή MLA

Bray, Leonard. N. W. Ayer & Son's Directory: Newspapers and Periodicals 14968 : (continuing American Newspaper Annual and Directory). Philadelphia, PA: N. W. Ayer & Son, 1968.

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