Cita APA (7th ed.)

Tan, K. S. (1979). Three sisters of Sz. Heinemann Educational Books (Asia).

Cita Chicago (17th ed.)

Tan, Kok Seng. Three Sisters of Sz. Singapore: Heinemann Educational Books (Asia), 1979.

Cita MLA (8th ed.)

Tan, Kok Seng. Three Sisters of Sz. Heinemann Educational Books (Asia), 1979.