Beer, F. P., Johnston, R. E., & Johnston, E. R. (1972). Vector mechanics for engineers: Statistics (2nd ed.). New York; St. Louis: Mc Graw-Hill.
Παραπομπή Chicago StyleBeer, Ferdinand P., Russel E. Johnston, and E. Russell Johnston. Vector Mechanics for Engineers: Statistics. 2nd ed. New York; St. Louis: Mc Graw-Hill, 1972.
Παραπομπή MLABeer, Ferdinand P., Russel E. Johnston, and E. Russell Johnston. Vector Mechanics for Engineers: Statistics. 2nd ed. New York; St. Louis: Mc Graw-Hill, 1972.
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