Hussin, Zolkafli and Yeop Yunus, Nek Kamal (2002) Kegagalan perkhidmatan: Implikasi kepada usahawan dalam industri perkhidmatan. In: Seminar Kebangsaan Keusahawanan Pelancongan , 17-18 Ogos 2002 , Awana Porto Malai, Langkawi. (Unpublished)

Yeop Yunus, Nek Kamal and Hussin, Zolkafli and Yusoff, Rushami Zien (2004) Service recovery strategy and customer satisfaction in higher education. In: ASEAN Symposium on Educational Management and Leadership (ASEMAL4), 13 - 15 Disember 2004, Grand Plaza Parkroyal, Penang. (Unpublished)

Mohd Yunus, Jasmani and Mahajar, Abdul Jumaat and Yeop Yunus, Nek Kamal (2013) The relationship using high technology and the success of entrepreneurs in Malaysia. In: 4th International Conference on Education and Information Management, 21 ~ 22 December 2013, Penang, Malaysia.