Cita APA (7th ed.)

Ling, P. (1995). Thoughts for effective living. Heinemann Asia.

Cita Chicago (17th ed.)

Ling, Peter. Thoughts for Effective Living. Singapore: Heinemann Asia, 1995.

Cita MLA (9th ed.)

Ling, Peter. Thoughts for Effective Living. Heinemann Asia, 1995.