APA Citation

 Khoo, I. (2007).  Liquid crystals.  John Wiley & Sons.

Chicago Style Citation

 Khoo, Iam-Choon.  Liquid Crystals.  John Wiley & Sons, 2007.

MLA Citation

 Khoo, Iam-Choon.  Liquid Crystals.  John Wiley & Sons, 2007.

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