Cita APA (7th ed.)

Ho Peg Leng. (2017). Science Activity Book 1. Marshall Cavendish.

Cita Chicago (17th ed.)

Ho Peg Leng. Science Activity Book 1. Singapore: Marshall Cavendish, 2017.

Cita MLA (9th ed.)

Ho Peg Leng. Science Activity Book 1. Marshall Cavendish, 2017.