S., H., A. et al.(1982).Theory and problems of machine design / Allen S. Hall, Alfred R. Holowenko, Herman G. Laughlin (Ed.S1 (metric)).Singapura:McGraw-Hill book company.
Gaya MLA
Hall, Allen, S.. et al."Theory and problems of machine design / Allen S. Hall, Alfred R. Holowenko, Herman G. Laughlin".Ed.S1 (metric)Singapura:McGraw-Hill book company,1982.Textbook.