1. Akaha, T. (1997). US-Japan security alliance adrift? The Mongolian Journal of International Affairs, 4(1), 3–20.
2. Akaha, T. (2010). Japan’s soft power-hard power balancing act. In D. Arase & T. Akaha (Eds.), The US-Japan alliance. Balancing soft and hard power in East Asia (pp. 58–79). London: Routledge.
3. Aoki, M. (2014, April 24). Obama assures Abe on Senkakus. The Japan Times. Retrieved February 23, 2015, from http://www.japantimes.co.jp/news/2014/04/24/national/obama-tells-abe-security-treaty-covers-senkakus/#.VWCrs-s2viw
4. APEC. (2015). Bilateral linkages database. Retrieved March 9, 2015, from http://statistics.apec.org/index.php/bilateral_linkage/index
5. Arase, D. (2010). Japanese security policy. From soft to hard power. In D. Arase & T. Akaha (Eds.), The US-Japan alliance. Balancing soft and hard power in East Asia (pp. 35–57). London: Routledge.