APA

Holt R., Anderson J., Baxendale K. & Henry S. (2010). Blue Skies. England, Essex: Pearson Education Limited.

Chicago

Holt Ron, Anderson Julie, Baxendale Kathy and Henry Sally. 2010. Blue Skies. England, Essex: Pearson Education Limited.

Harvard

Holt R., Anderson J., Baxendale K. and Henry S. (2010). Blue Skies. England, Essex: Pearson Education Limited.

MLA

Holt Ron, Anderson Julie, Baxendale Kathy and Henry Sally. Blue Skies. England, Essex: Pearson Education Limited. 2010.