APA aipamena

MICHAEL. (2008). SPONTANEOUS OPTIMISM TM. MAGNA PUB.

Chicago Style aipamena

MICHAEL. SPONTANEOUS OPTIMISM TM. MUM: MAGNA PUB, 2008.

MLA aipamena

MICHAEL. SPONTANEOUS OPTIMISM TM. MAGNA PUB, 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.