APA-čujuhus (7. p.)
Sawyer, W. W. (1943). Mathematician`s Delight (1a.ed.). Penguin books.
Chicago-čujuhus (17. p.)
Sawyer, W. W. Mathematician`s Delight. 1a.ed. Michigan: Penguin books, 1943.
MLA-čujuhus (9. p.)
Sawyer, W. W. Mathematician`s Delight. 1a.ed. Penguin books, 1943.
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