Shepherd, W., & Shepherd, D. W. (2008). Problems and solutions: Energy studies. Imperial College Press.
Citación estilo ChicagoShepherd, W., and D W. Shepherd. Problems and Solutions: Energy Studies. London: Imperial College Press, 2008.
Cita MLAShepherd, W., and D W. Shepherd. Problems and Solutions: Energy Studies. Imperial College Press, 2008.
Warning: These citations may not always be 100% accurate.