Gaya APA

Kaempffer, F., Swanson, C, P. (1967). **The elements of physics a new approach . Massachusetts: Massachusetts: Blaisdell; 1967.

Gaya MLA

Kaempffer, F.A., Swanson, Carl, P.. "**The elements of physics a new approach". Massachusetts: Massachusetts: Blaisdell; 1967, 1967. Text.