APA-čujuhus (7. p.)
Spiller, R. E. (1956). The cycle of american literature: An essay in historial criticism. Macmillan.
Chicago-čujuhus (17. p.)
Spiller, Robert E. The Cycle of American Literature: An Essay in Historial Criticism. Nueva York, EUA: Macmillan, 1956.
MLA-čujuhus (9. p.)
Spiller, Robert E. The Cycle of American Literature: An Essay in Historial Criticism. Macmillan, 1956.
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