Trombulak, S.C., Frissell, C.A., 2000. Review of Ecological Effects of Roads on Terrestrial and Aquatic Communities. Conservation Biology 14, 18-30.
Trombulak, S.C., Frissell, C.A., 2000. Mapitio ya nyingi Ekolojia ya Barabara ya Jamii nchi kavu na Majini . Hifadhi ya Biolojia 14, 18-30.