APA

Walker J., . (2014). Principles of physics. New York: McGraw-Hill.

Chicago

Walker Jearl, . 2014. Principles of physics. New York: McGraw-Hill.

Harvard

Walker J., . (2014). Principles of physics. New York: McGraw-Hill.

MLA

Walker Jearl, . Principles of physics. New York: McGraw-Hill. 2014.