APA (7th ed.) Citation

Sedlák, F. (1921). Pure thought and the riddle of the universe. G. Allen & Unwin.

Chicago Style (17th ed.) Citation

Sedlák, Francis. Pure Thought and the Riddle of the Universe. London: G. Allen & Unwin, 1921.

MLA (8th ed.) Citation

Sedlák, Francis. Pure Thought and the Riddle of the Universe. G. Allen & Unwin, 1921.

Warning: These citations may not always be 100% accurate.