Adnan, Zurina, Johanim Johari, Hazman Shah Abdullah, and Jasmine Ahmad. 2017. “Unveiling the Incidence of Interfirm Collaboration: Evidence from Research and Development Companies in Malaysia”. Gadjah Mada International Journal of Business 19 (2), 123-44. https://journal.ugm.ac.id/v3/gamaijb/article/view/15588.