APA (7 वां संस्करण) प्रशस्ति पत्र

Okagaki, L., & Sternberg, R. J. (1991). Directors of development: Influences on the development of children's thinking. L. Erlbaum Associates.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Okagaki, Lynn, और Robert J. Sternberg. Directors of Development: Influences on the Development of Children's Thinking. Hillsdale, N.J: L. Erlbaum Associates, 1991.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Okagaki, Lynn, और Robert J. Sternberg. Directors of Development: Influences on the Development of Children's Thinking. L. Erlbaum Associates, 1991.