Isaacson, L. E. (1977). Career information in counseling and teaching (r3d ed.). Allyn and Bacon.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIsaacson, Lee E. Career Information in Counseling and Teaching. r3d ed. Boston: Allyn and Bacon, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रIsaacson, Lee E. Career Information in Counseling and Teaching. r3d ed. Allyn and Bacon, 1977.
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