APA (7th ed.) Citation

Zakariya @ Zakaria, M. S. (2003). Call procedure of ISDN signalling / Mohd Shuhari Zakariya @ Zakaria.

Chicago Style (17th ed.) Citation

Zakariya @ Zakaria, Mohd Shuhari. Call Procedure of ISDN Signalling / Mohd Shuhari Zakariya @ Zakaria. 2003.

MLA (8th ed.) Citation

Zakariya @ Zakaria, Mohd Shuhari. Call Procedure of ISDN Signalling / Mohd Shuhari Zakariya @ Zakaria. 2003.

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