Cita APA (7a ed.)

Saxena, y. (2004). Environment explained: Meaning and definitions of terms and themes. Excel.

Cita Chicago Style (17a ed.)

Saxena, y. Environment Explained: Meaning and Definitions of Terms and Themes. New Delhi: Excel, 2004.

Cita MLA (9a ed.)

Saxena, y. Environment Explained: Meaning and Definitions of Terms and Themes. Excel, 2004.