APA

Merrill W. S., American Library Association, . (1928). Code for classifiers: principles governing the consistent placing of books in a system of classification. Chicago: American library association.

Chicago

Merrill William Stetson, American Library Association, . 1928. Code for classifiers: principles governing the consistent placing of books in a system of classification. Chicago: American library association.

Harvard

Merrill W. S., American Library Association, . (1928). Code for classifiers: principles governing the consistent placing of books in a system of classification. Chicago: American library association.

MLA

Merrill William Stetson, American Library Association, . Code for classifiers: principles governing the consistent placing of books in a system of classification. Chicago: American library association. 1928.