Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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