APA (7 वां संस्करण) प्रशस्ति पत्र

TROLL, L. E. (1975). Early and middle adulthood: The best is to be-maybe. Brooks/Cole.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

TROLL, Lillian E. Early and Middle Adulthood: The Best Is to Be-maybe. Monterey: Brooks/Cole, 1975.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

TROLL, Lillian E. Early and Middle Adulthood: The Best Is to Be-maybe. Brooks/Cole, 1975.