APA
hughes j. h., . (1980). basic englineering mechanics. london: elbs & macmilan.
Chicago
hughes j h, . 1980. basic englineering mechanics. london: elbs & macmilan.
Harvard
hughes j. h., . (1980). basic englineering mechanics. london: elbs & macmilan.
MLA
hughes j h, . basic englineering mechanics. london: elbs & macmilan. 1980.