Citazione Stile APA (7a Edizione)

Unabia, C. C. (2000). Walu and his farm. no date of publication].

Citazione stile Chigago Style (17a edizione)

Unabia, Carmen Ching. Walu and His Farm. [no place of publication: no date of publication], 2000.

Citatione MLA (9a ed.)

Unabia, Carmen Ching. Walu and His Farm. no date of publication], 2000.