APA (7 वां संस्करण) प्रशस्ति पत्र

Lado, r., & fries, C. C. 1. j. a. (1958). English pattern practices: Establishing the patterns as habits. University of Michigan Press.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Lado, robert, और Charles Carpenter 1887- joint auth fries. English Pattern Practices: Establishing the Patterns as Habits. Ann Arbor: University of Michigan Press, 1958.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Lado, robert, और Charles Carpenter 1887- joint auth fries. English Pattern Practices: Establishing the Patterns as Habits. University of Michigan Press, 1958.