References - Physics bibliographies - in Harvard style

In-text: (Dictionary.com - The world's favorite online English dictionary!, 2015)

Your Bibliography: Dictionary.com. 2015. Dictionary.com - The world's favorite online English dictionary!. [online] Available at: <http://dictionary.reference.com> [Accessed 11 January 2015].

In-text: (Hardware, 2014)

Your Bibliography: Hardware, E., 2014. Categories of Gate Latches: Gravity Gate Latches, Spring Loaded Gate Latches, and Bolt Gate Latches. [online] 360yardware.com. Available at: <http://www.360yardware.com/gate_latch_categories.htm> [Accessed 11 January 2015].

In-text: (Johnson, 2015)

Your Bibliography: Johnson, S., 2015. Modern Uses of a Catapult | eHow. [online] eHow. Available at: <http://www.ehow.com/info_8597229_modern-uses-catapult.html> [Accessed 11 January 2015].

In-text: (History of Catapults - Physics of Catapults, n.d.)

Your Bibliography: Sites.google.com. n.d. History of Catapults - Physics of Catapults. [online] Available at: <https://sites.google.com/site/physicsofcatapults/home/history-of-catapults> [Accessed 11 January 2015].

In-text: (Modern Day Catapults - Physics of Catapults, n.d.)

Your Bibliography: Sites.google.com. n.d. Modern Day Catapults - Physics of Catapults. [online] Available at: <https://sites.google.com/site/physicsofcatapults/home/modern-day-catapults> [Accessed 11 January 2015].