APA-čujuhus (7. p.)

Heiss, A. M. (1970). Challenges to graduate shcools. Jossey-Bass.

Chicago-čujuhus (17. p.)

Heiss, Ann M. Challenges to Graduate Shcools. Sanfrancisco: Jossey-Bass, 1970.

MLA-čujuhus (9. p.)

Heiss, Ann M. Challenges to Graduate Shcools. Jossey-Bass, 1970.

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