APA-čujuhus (7. p.)

Gould, E. P. Stray Pebbles from the Shores of Thought.

Chicago-čujuhus (17. p.)

Gould, Elizabeth Porter. Stray Pebbles from the Shores of Thought.

MLA-čujuhus (9. p.)

Gould, Elizabeth Porter. Stray Pebbles from the Shores of Thought.

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