Παραπομπή APA

Shepherd, W. 1., & Shepherd, D. W. (2008). Problems and solutions: Energy studies. London: Imperial College Press.

Παραπομπή Chicago Style

Shepherd, W. 1928-, and D. W. Shepherd. Problems and Solutions: Energy Studies. London: Imperial College Press, 2008.

Παραπομπή MLA

Shepherd, W. 1928-, and D. W. Shepherd. Problems and Solutions: Energy Studies. London: Imperial College Press, 2008.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.