APA (7e ed.) Bronvermelding

Punyapas, N. (1983). The design of hydraulic valve circuit under microprocessor control for increasing efficiency of hydraulic servo system. University Microfilms.

Chicago (17e ed.) Bronvermelding

Punyapas, Noparut. The Design of Hydraulic Valve Circuit Under Microprocessor Control for Increasing Efficiency of Hydraulic Servo System. Ann Arbor, Mich.: University Microfilms, 1983.

MLA (8e ed.) Bronvermelding

Punyapas, Noparut. The Design of Hydraulic Valve Circuit Under Microprocessor Control for Increasing Efficiency of Hydraulic Servo System. University Microfilms, 1983.