APA-čujuhus (7. p.)
Sivard, R. L. (1981). World energy survey (2nd ed.). World Priorities.
Chicago-čujuhus (17. p.)
Sivard, Ruth Leger. World Energy Survey. 2nd ed. Leesburg, Virginia: World Priorities, 1981.
MLA-čujuhus (9. p.)
Sivard, Ruth Leger. World Energy Survey. 2nd ed. World Priorities, 1981.
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