Sadoff, Ahren
Questioning the Universe: concepts in physics
CRC Press, Taylor & Francis Group, 2008
Buku Teks
Questioning media ethics
edited by Bernard Rubin
Praeger, 1978
Buku Teks SO
Questioning Gus Dur
The Jakarta Post, 2000
Buku Teks SO
Questioning development in Southeast Asia
edited by Nancy Chng
Select Books, 1977
Buku Teks SO
Kua, Kia Soong
Questioning arms spending in Malaysia
Suaram, 2010
Buku Teks SO