Cita APA (7th ed.)

Tan, C. H., Ng, M., & Chen, J. H. (2012). Safeguard, nurture, cherish our environment. National Environment Agency.

Cita Chicago (17th ed.)

Tan, Chui Hua, Marcus Ng, i Jennifer Hollie Chen. Safeguard, Nurture, Cherish Our Environment. Singapore: National Environment Agency, 2012.

Cita MLA (9th ed.)

Tan, Chui Hua, et al. Safeguard, Nurture, Cherish Our Environment. National Environment Agency, 2012.