Hutton, Wendy
Discovering Sabah
Opus Publications Sdn Bhd, 2007
 Buku Referensi
Chapman, Robert D.
Discovering astronomy
W.H. Freeman, 1978
 Buku Teks
Jefferys, William H.
Discovering astronomy
John Wiley & Sons, 1981
 Buku Teks
Yohana Nessy Christiana
Discovering myselft
PT Gramedia, 2022
 Buku Teks
Kularatna, Nihal
Electronic circuit design : from concept to implementation
CRC Press, Taylor & Francis Group, 2008
 Buku Teks