Cita APA (7a ed.)

Letcher, T. M. (2020). Future energy: Improved, sustainable and clean options for our planet (Third edition.). Elsevier.

Cita Chicago Style (17a ed.)

Letcher, T. M. Future Energy: Improved, Sustainable and Clean Options for Our Planet. Third edition. Amsterdam, Netherlands: Elsevier, 2020.

Cita MLA (8a ed.)

Letcher, T. M. Future Energy: Improved, Sustainable and Clean Options for Our Planet. Third edition. Elsevier, 2020.