APA-viite (7. p.)

Willoughby, S. S. (1990). Mathematics education for a changing world. ASCD.

Chicago-viite (17. p.)

Willoughby, Stephen S. Mathematics Education for a Changing World. Alexandria: ASCD, 1990.

MLA-viite (9. p.)

Willoughby, Stephen S. Mathematics Education for a Changing World. ASCD, 1990.