Yusuf, Asnidar Hanim and Oyelakin, Oyewale Idris and Abdul Shukor, Syadiyah and Ahmad Bustamam, Ummi Salwa (2017) Role of halal certification in business performance: A study of the kopitiams industry. In: Sintok International Conference on Social Science and Management (SICONSEM 2017), 4-5 December 2017, Adya Hotel, Langkawi Island, Kedah, Malaysia.

Yusuf, Asnidar Hanim and Oyelakin, Idris Oyewale and Abdul Shukor, Syadiyah and Ahmad Bustamam, Ummi Salwa (2017) The role of halal certification in business performance in Selangor: A study on kopitiams. Malaysian Management Journal, 21. pp. 1-22. ISSN 0128-6226