APA-čujuhus (7. p.)

Sanford, W. W. (2018). The Role of the Impractical. University of Ife Press.

Chicago-čujuhus (17. p.)

Sanford, William W. The Role of the Impractical. University of Ife Press, 2018.

MLA-čujuhus (9. p.)

Sanford, William W. The Role of the Impractical. University of Ife Press, 2018.

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