APA (7th ed.) Citation

Osman Ayob. (1989). Etika kerja & profesionalisme Islam. Frontier Enterprise.

Chicago Style (17th ed.) Citation

Osman Ayob. Etika Kerja & Profesionalisme Islam. Kuala Lumpur: Frontier Enterprise, 1989.

MLA (9th ed.) Citation

Osman Ayob. Etika Kerja & Profesionalisme Islam. Frontier Enterprise, 1989.

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