APA (7th ed.) Citation

Yusop, N. ‘., & Yusof, S. (2003). Programmable musical bell / Nor ‘Aida Yusop and Shahida Yusof.

Chicago Style (17th ed.) Citation

Yusop, Nor ‘Aida, and Shahida Yusof. Programmable Musical Bell / Nor ‘Aida Yusop and Shahida Yusof. 2003.

MLA (9th ed.) Citation

Yusop, Nor ‘Aida, and Shahida Yusof. Programmable Musical Bell / Nor ‘Aida Yusop and Shahida Yusof. 2003.

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