Cita APA (7th ed.)

Leng, H. P., & Khang, G. N. (2003). I-Science: Workbook. SNP Panpac.

Cita Chicago (17th ed.)

Leng, Ho Peck, i Goh Ngoh Khang. I-Science: Workbook. Singapore: SNP Panpac, 2003.

Cita MLA (8th ed.)

Leng, Ho Peck, i Goh Ngoh Khang. I-Science: Workbook. SNP Panpac, 2003.