Cita APA (7a ed.)

Dorling Kindersley Multimedia. (1997). Encyclopedia of nature (Version 2.0, CD-ROM for Macintosh & Windows.). DK Multimedia.

Cita Chicago Style (17a ed.)

Dorling Kindersley Multimedia. Encyclopedia of Nature. Version 2.0, CD-ROM for Macintosh & Windows. New York: DK Multimedia, 1997.

Cita MLA (9a ed.)

Dorling Kindersley Multimedia. Encyclopedia of Nature. Version 2.0, CD-ROM for Macintosh & Windows. DK Multimedia, 1997.