APA-čujuhus (7. p.)
Treece, E. W., & Treece, J. W. (1977). Elements of research in nursing (2nd ed.). C.V. Mosby.
Chicago-čujuhus (17. p.)
Treece, Eleanor Walters, juo James William Treece. Elements of Research in Nursing. 2nd ed. Saint Louis: C.V. Mosby, 1977.
MLA-čujuhus (9. p.)
Treece, Eleanor Walters, juo James William Treece. Elements of Research in Nursing. 2nd ed. C.V. Mosby, 1977.
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