APA (7th ed.) Citation

Cassidy, R. (1979). Gas : natural energy / (by) Richard Cassidy: Natural energy. Muller.

Chicago Style (17th ed.) Citation

Cassidy, Richard. Gas : Natural Energy / (by) Richard Cassidy: Natural Energy. London: Muller, 1979.

MLA (9th ed.) Citation

Cassidy, Richard. Gas : Natural Energy / (by) Richard Cassidy: Natural Energy. Muller, 1979.

Warning: These citations may not always be 100% accurate.