Cita APA

Ball, H. C. J. (1940). An Inexpensive Stretcher Back Rest.

Chicago Style Citation

Ball, Harold C. J. An Inexpensive Stretcher Back Rest. 1940.

Cita MLA

Ball, Harold C. J. An Inexpensive Stretcher Back Rest. 1940.

Atenció: Aquestes cites poden no estar 100% correctes.