APA-čujuhus (7. p.)
Trumbull, C. P. Britannica Book of the Year: 2000. Encyclopaedia Britannica.
Chicago-čujuhus (17. p.)
Trumbull, Charles P. Britannica Book of the Year: 2000. Chicago, EUA: Encyclopaedia Britannica.
MLA-čujuhus (9. p.)
Trumbull, Charles P. Britannica Book of the Year: 2000. Encyclopaedia Britannica.
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