Gaya APA
Houghton, K., Browness, E. (2005).
KS3 Geography : Complete revision & practice .
Inggris:
Inggris : www.cgpbooks.co.uk, 2005.
Gaya MLA
Houghton, Kate., Browness, Ellen..
"KS3 Geography : Complete revision & practice".
Inggris:
Inggris : www.cgpbooks.co.uk, 2005,
2005.
Text.