APA aipamena

WALIDI. (2006). Step by Step To Speak English. Klaten: Citra Aji Parama.

Chicago Style aipamena

WALIDI. Step By Step To Speak English. Klaten: Citra Aji Parama, 2006.

MLA aipamena

WALIDI. Step By Step To Speak English. Klaten: Citra Aji Parama, 2006.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.