APA (7th ed.) Citation

Abdullah Ishak. (2012). Kekalkan Kehijauan Alam. Pustaka Prinsip Sdn. Bhd..

Chicago Style (17th ed.) Citation

Abdullah Ishak. Kekalkan Kehijauan Alam. Kuala Lumpur: Pustaka Prinsip Sdn. Bhd., 2012.

MLA (9th ed.) Citation

Abdullah Ishak. Kekalkan Kehijauan Alam. Pustaka Prinsip Sdn. Bhd., 2012.

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