APA

Herling John,, . (1964). Labour unions in America. New York: Fawcett Publications.

Chicago

Herling John,, . 1964. Labour unions in America. New York: Fawcett Publications.

Harvard

Herling John,, . (1964). Labour unions in America. New York: Fawcett Publications.

MLA

Herling John,, . Labour unions in America. New York: Fawcett Publications. 1964.