Cita APA (7a ed.)

Van der Toorn , B. (1987). Renewavle energy a global view. Shell.

Cita Chicago Style (17a ed.)

Van der Toorn , Bertus. Renewavle Energy a Global View. Londres: Shell, 1987.

Cita MLA (8a ed.)

Van der Toorn , Bertus. Renewavle Energy a Global View. Shell, 1987.