APA (7th ed.) Citation

Helena Cheah. (2004). Gravity & Wind. Penapro Sdn Bhd.

Chicago Style (17th ed.) Citation

Helena Cheah. Gravity & Wind. Petaling Jaya: Penapro Sdn Bhd, 2004.

MLA (9th ed.) Citation

Helena Cheah. Gravity & Wind. Penapro Sdn Bhd, 2004.

Warning: These citations may not always be 100% accurate.