@misc{wikipedia:Apollonius,
  author = "Wikipedia",
  title = "Apollonius' theorem --- Wikipedia{,} The Free Encyclopedia",
  year = "2017",
  note = "\url{https://en.wikipedia.org/w/index.php?title=Apollonius%27_theorem&oldid=790659235} [Online; accessed 30-July-2017]"
}

@misc{wikipedia:Stewart,
  author = "Wikipedia",
  title = "Stewart's theorem --- Wikipedia{,} The Free Encyclopedia",
  year = "2017",
  note = "\url{https://en.wikipedia.org/w/index.php?title=Stewart%27s_theorem&oldid=790777285} [Online; accessed 30-July-2017]"
}

@misc{surowski-2011,
  author = "David B. Surowski",
  title = "Advanced High-School Mathematics",
  year = "2011",
  note = "\url{https://www.math.ksu.edu/~dbski/writings/further.pdf} [Online; accessed 30-July-2017]"
}
