APA

Quintana J., . (2007). Oxford Heroes 1 SB. Oxford: Oxford University Press.

Chicago

Quintana Jenny, . 2007. Oxford Heroes 1 SB. Oxford: Oxford University Press.

Harvard

Quintana J., . (2007). Oxford Heroes 1 SB. Oxford: Oxford University Press.

MLA

Quintana Jenny, . Oxford Heroes 1 SB. Oxford: Oxford University Press. 2007.