Kocaoluk, H. Hülya Hakan's going on holiday/ H. Hülya Kocaoluk. - İstanbul: Kocaoluk, 2000. - 16 p.; 23 cm. - English reading series . Pembe Mavi ISBN: 9758252577 Dewey Class. No.: 428.6 / KOC 2000