Gaya APA

Ho, S, L, G., Joo, T, S. (1978). Focus on general paper . Singapura: Pan Pacific Book Ditstriutors.

Gaya MLA

Ho, Shirley, Lau, Guan., Joo, Tan, Sok. "Focus on general paper". Singapura: Pan Pacific Book Ditstriutors, 1978. Text.