APA (7th ed.) Citation

Jones, W. (2004). Beginning DirectX 9. Course PTR, a division of Course Technology.

Chicago Style (17th ed.) Citation

Jones, Wendy. Beginning DirectX 9. Boston: Course PTR, a division of Course Technology, 2004.

MLA (9th ed.) Citation

Jones, Wendy. Beginning DirectX 9. Course PTR, a division of Course Technology, 2004.