Cita APA (7a ed.)

Pavel Tsvetkov & Tsvetkov, P. V. (2018). Energy systems and environment. IntechOpen.

Cita Chicago Style (17a ed.)

Pavel Tsvetkov y Pavel V. Tsvetkov. Energy Systems and Environment. London, England: IntechOpen, 2018.

Cita MLA (9a ed.)

Pavel Tsvetkov y Pavel V. Tsvetkov. Energy Systems and Environment. IntechOpen, 2018.