ROHAN BOOK CO. (2001). THINGS YOU WANT TO KNOW EARTH (1st.). ROHAN BOOK CO.
Chicago-referens (17:e uppl.)ROHAN BOOK CO. THINGS YOU WANT TO KNOW EARTH. 1st. DELHI: ROHAN BOOK CO, 2001.
MLA-referens (9:e uppl.)ROHAN BOOK CO. THINGS YOU WANT TO KNOW EARTH. 1st. ROHAN BOOK CO, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.