Abdul Latif Rifqi, Biografi Abu Bakar (As-Siddiq) : sahabat utama & pertama - viii, 315 pages ; 22 cm - Siri 4 khalifah gemilang . - Siri 4 khalifah gemilang . ISBN: 9789670398419 Subjects--Topical Terms: Caliphs - Biography Dewey Class. No.: 297.648