Article

Usman, Mustofa and NJuho, Peter and Elfaki, Faiz A. M. and Daoud, Jamal I (2011) The Combination of Several RCBDs. Australian Journal of Basic and Applied Sciences, 5 (4). pp. 67-75. ISSN ISSN 1991-8178

Book

Usman, Mustofa (2011) Pengantar Topologi. Gema Perkasa Abadi, Bandar Lampung, Indonesia. ISBN 978-602-98559-0-6