APA (7th ed.) Citation

DE SILVA, D., & WONG, J. (1996). Preston advanced vocabulary practice: Primary 6. Binarupa Aksara.

Chicago Style (17th ed.) Citation

DE SILVA, Denise, and Julie WONG. Preston Advanced Vocabulary Practice: Primary 6. Jakarta: Binarupa Aksara, 1996.

MLA (9th ed.) Citation

DE SILVA, Denise, and Julie WONG. Preston Advanced Vocabulary Practice: Primary 6. Binarupa Aksara, 1996.