APA (7th ed.) Citation

Ooi,Ophelia. (1987). Ditto's Happy Day. Penerbit Prisma.

Chicago Style (17th ed.) Citation

Ooi,Ophelia. Ditto's Happy Day. Selangor: Penerbit Prisma, 1987.

MLA (9th ed.) Citation

Ooi,Ophelia. Ditto's Happy Day. Penerbit Prisma, 1987.

Warning: These citations may not always be 100% accurate.