Ahmad Ridzuan Bin Wan Chik
Utusan Publications & Distributors, 2011
Buku Referensi
Omar, Syed Othman Syed
Universitas Kebangsaan Malaysia, 1999
Buku Teks
Nasution, Abdul Haris, 1918-2000
Yayasan Penerbit Minang, [Date of publication not identified]
Buku Teks
Buku Teks
Riri Yuana
2010
UI - Tugas Akhir