How to use the steel square,
pub. by arrangement with the International correspondence schools, Scranton, Pa., by the I.C.S. staff.

APA Citation

International Correspondence Schools. (19211908). How to use the steel square. Philadelphia: David McKay company.

MLA Citation

International Correspondence Schools. How to Use the Steel Square. Philadelphia: David McKay company, 19211908.

Warning: These citations may not always be complete (especially for serials).