APA (7 वां संस्करण) प्रशस्ति पत्र

PORTER, H. W., LAWSHE, C. H., & LASCOE, O. D. (1965). Machine shop: Operations and setups. American Technical Society.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

PORTER, Harold W., Charles H. LAWSHE, और Orville D. LASCOE. Machine Shop: Operations and Setups. Chocago: American Technical Society, 1965.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

PORTER, Harold W., et al. Machine Shop: Operations and Setups. American Technical Society, 1965.