Cita APA (7a ed.)

Abbott, R., Steadman, S., & Birchenough, M. (1988). GRIDS primary school handbook (2nd ed.). Longman ; School Curriculum Development Committee.

Cita Chicago Style (17a ed.)

Abbott, Ron, Stephen Steadman, y Michael Birchenough. GRIDS Primary School Handbook. 2nd ed. Layerthorpe, York : London: Longman ; School Curriculum Development Committee, 1988.

Cita MLA (9a ed.)

Abbott, Ron, et al. GRIDS Primary School Handbook. 2nd ed. Longman ; School Curriculum Development Committee, 1988.