BOWIE, G. (1992). Twenty questions: An introduction to philosophy. Harcourt Brace Jovanovich College Publishers.
Chicago-čujuhus (17. p.)BOWIE, G. Twenty Questions: An Introduction to Philosophy. Harcourt Brace Jovanovich College Publishers, 1992.
MLA-čujuhus (9. p.)BOWIE, G. Twenty Questions: An Introduction to Philosophy. Harcourt Brace Jovanovich College Publishers, 1992.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.