Helft, G. (2001). From the head upwards: Comprehensive schools yesterday, today and tomorrow (1. publ.). Carpenter.
Chicago-Zitierstil (17. Ausg.)Helft, Gunter. From the Head Upwards: Comprehensive Schools Yesterday, Today and Tomorrow. 1. publ. Charlbury, Oxfordsh: Carpenter, 2001.
MLA-Zitierstil (9. Ausg.)Helft, Gunter. From the Head Upwards: Comprehensive Schools Yesterday, Today and Tomorrow. 1. publ. Carpenter, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.