Citazione APA

Gilbertson, H. W. (1948). Educational exhibits: How to prepare and use them; a manual for extension workers. U.S. Govt. Print. Off..

Stile di citazione Chicago

Gilbertson, Henry Walter. Educational Exhibits: How to Prepare and Use Them; a Manual for Extension Workers. Washington: U.S. Govt. Print. Off., 1948.

Citazione MLA

Gilbertson, Henry Walter. Educational Exhibits: How to Prepare and Use Them; a Manual for Extension Workers. U.S. Govt. Print. Off., 1948.