Gaya APA
Beer, F, P., Jr, E, R, J. (1977).
Vector mechanics for engineers: dynamics (3rd ed.).
New York:
McGraw-Hill Book Company.
Gaya MLA
Beer, Ferdinand, P.., Jr, E., Russell, Johnston,.
"Vector mechanics for engineers: dynamics".
3rd ed.
New York:
McGraw-Hill Book Company,
1977.
Text.