Research paper - Biology bibliographies - in Harvard style

In-text: (Carlson, 2014)

Your Bibliography: Carlson, S., 2014. The Japanese Attack On Pearl Harbor Was About Oil. [online] Task & Purpose. Available at: <https://taskandpurpose.com/japanese-attack-pearl-harbor-oil/> [Accessed 1 March 2018].

In-text: (Higgs, 2006)

Your Bibliography: Higgs, R., 2006. How U.S. Economic Warfare Provoked Japan's Attack on Pearl Harbor | Robert Higgs. [online] The Independent Institute. Available at: <http://www.independent.org/newsroom/article.asp?id=1930> [Accessed 31 March 2018].

In-text: (Rogers and Thomas, 2015)

Your Bibliography: Rogers, K. and Thomas, J., 2015. The move to global war. Oxford University Press.

In-text: (Roll, 2013)

Your Bibliography: Roll, D., 2013. Oil led to Pearl Harbor. [online] Salon. Available at: <https://www.salon.com/2013/12/05/oil_led_to_pearl_harbor/> [Accessed 1 March 2018].