Arms & Arms Control a Symposium
edited by Ernest W. Lefever
Frederick A. Praeger, 1962
Buku Teks SO
Questioning the ABC'S of women's literacy
Artikel Jurnal
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