Sugalih, M., A., Valkenburgh, V.(1954).The New Model Illustrated Course of Elementary Technician Training Basis Electricity In Five Parts Part Two .London:The Technical Press Ltd.
Gaya MLA
Sugalih, M., A., Valkenburgh, V..The New Model Illustrated Course of Elementary Technician Training Basis Electricity In Five Parts Part Two.London:The Technical Press Ltd,1954.Text.