Dyfyniad APA

Pirog,Robert L, & Stamos,Stephen C. (1987). Energy economics: Theory and policy. Prentice - Hall.

Dyfyniad Arddull Chicago

Pirog,Robert L, and Stamos,Stephen C. Energy Economics: Theory and Policy. New Jersey: Prentice - Hall, 1987.

Dyfyniad MLA

Pirog,Robert L, and Stamos,Stephen C. Energy Economics: Theory and Policy. Prentice - Hall, 1987.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.