APA-Zitierstil (7. Ausg.)

(1990). Geography outside the classroom: Guidelines for geographical work outside the classroom.

Chicago-Zitierstil (17. Ausg.)

Geography Outside the Classroom: Guidelines for Geographical Work Outside the Classroom. Sheffield, 1990.

MLA-Zitierstil (9. Ausg.)

Geography Outside the Classroom: Guidelines for Geographical Work Outside the Classroom. 1990.