Gaya APA

Swanson, C, P. (NULL). The New Encyclopaedia britannica volume 6 knowledge in depth earth ì everglades . Chicago:: Chicago: Encyclopaedia Britannica Inc.; 1983.

Gaya MLA

Swanson, Carl, P.. "The New Encyclopaedia britannica volume 6 knowledge in depth earth ì everglades". Chicago:: Chicago: Encyclopaedia Britannica Inc.; 1983, NULL. Text.