Dyfyniad APA

(1923). American library directory ... a classified list of libraries with names of librarians. R. R. Bowker.

Dyfyniad Arddull Chicago

American Library Directory ... a Classified List of Libraries with Names of Librarians. New York: R. R. Bowker, 1923.

Dyfyniad MLA

American Library Directory ... a Classified List of Libraries with Names of Librarians. R. R. Bowker, 1923.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.