Citazione Stile APA (7a Edizione)

Lai, C., & Chun Choon, N. (2015). Protecting our environment (First published.). Pearson Education South Asia.

Citazione stile Chigago Style (17a edizione)

Lai, Christine, e Neo Chun Choon. Protecting Our Environment. First published. Singapore: Pearson Education South Asia, 2015.

Citatione MLA (9a ed.)

Lai, Christine, e Neo Chun Choon. Protecting Our Environment. First published. Pearson Education South Asia, 2015.