Citace podle APA (7th ed.)

Não informado. (1972). Alternative sources of energy. Alternative Sources of Energy.

Citace podle Chicago (17th ed.)

Não informado. Alternative Sources of Energy. Milaca, Minn: Alternative Sources of Energy, 1972.

Citace podle MLA (8th ed.)

Não informado. Alternative Sources of Energy. Alternative Sources of Energy, 1972.

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