APA aipamena

Gutzman, A. D. (2002). Unforeseen circumstancesAlexis D. Gutzman. Amacom.

Chicago Style aipamena

Gutzman, Alexis D. Unforeseen CircumstancesAlexis D. Gutzman. Amacom, 2002.

MLA aipamena

Gutzman, Alexis D. Unforeseen CircumstancesAlexis D. Gutzman. Amacom, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.