World religions : encyclopedia
Encyclopaedia of religion and ethics
Dāirah al-ma‘ārif al-Islāmiyyah al-kubrā = دائرة المعارف الإسلامية الكبرى
Ensiklopedia akidah Islam
The Oxford companion to the history of modern science
Ensiklopedi sejarah Wali Songo 2
Ensiklopedi sejarah Wali Songo 1