The Association catalogue : machine tools made in America.

MLA

The Association Catalogue : Machine Tools Made In America. [New York]: National Machine Tool Buildiers' Association, 1921.

APA

(1921). The Association catalogue : machine tools made in America. [New York]: National Machine Tool Buildiers' Association.

Chicago

The Association Catalogue: Machine Tools Made In America. [New York]: National Machine Tool Buildiers' Association, 1921.