Yahaya Ismail, 1940- Siapa presiden UMNO 1987 : Mahathir-Tengku Razaleigh? / Yahaya Ismail. - Kuala Lumpur : Dinamika Kreatif, 1987. - 185 p. : ill. ; 19 cm. Subjects--Corporate Names: Pertubuhan Kebangsaan Melayu Bersatu. Subjects--Geographic Terms: Malaysia--Politics and government.