Pakdel, H. (2001). "Production of DL-limonene by vacuum pyrolysis of used tires". Journal of Analytical and Applied Pyrolysis. 57: 91-107. doi:10.1016/S0165-2370(00)00136-4.
Weitkamp, A. W. (1959). "I. The Action of Sulfur on Terpenes. The Limonene Sulfides". Journal of the American Chemical Society. 81 (13): 3430-3434. doi:10.1021/ja01522a069.
merriam-webster.com
Merriam-Webster's dictionary entry for "limonene 6 Kasım 2020 tarihinde Wayback Machine sitesinde arşivlendi.". Accessedon 16 March 2020.