APA (7e ed.) Bronvermelding

ROHAN BOOK CO. (2001). THINGS YOU WANT TO KNOW EARTH (1st.). ROHAN BOOK CO.

Chicago (17e ed.) Bronvermelding

ROHAN BOOK CO. THINGS YOU WANT TO KNOW EARTH. 1st. DELHI: ROHAN BOOK CO, 2001.

MLA (9e ed.) Bronvermelding

ROHAN BOOK CO. THINGS YOU WANT TO KNOW EARTH. 1st. ROHAN BOOK CO, 2001.