Citazione Stile APA (7a Edizione)

Earle, J., Ford, B., & Bowerman, P. (2009). Focus on map skills: Grades 10 to 12 (First publ. in 2007, 5. impr.). Maskew Miller Longman.

Citazione stile Chigago Style (17a edizione)

Earle, John, Brendan Ford, e P. Bowerman. Focus on Map Skills: Grades 10 to 12. First publ. in 2007, 5. impr. Pinelands, Cape Town: Maskew Miller Longman, 2009.

Citatione MLA (9a ed.)

Earle, John, et al. Focus on Map Skills: Grades 10 to 12. First publ. in 2007, 5. impr. Maskew Miller Longman, 2009.