Gaya APA

Key maths 9. (510). : v+378.

Gaya Chicago

Key maths 9. Nelson thornes. : v+378, 510. Baker David.

Gaya MLA

Key maths 9. Nelson thornes. : v+378, 510. Baker David.

Gaya Turabian

Key maths 9. : v+378, 510. Baker David.