Παραπομπή APA

Bell, S., & Matley, H. (1971). Mathematics for higher national certificate. Cambridge University Press.

Παραπομπή Chicago Style

Bell, S.W, και H. Matley. Mathematics for Higher National Certificate. London: Cambridge University Press, 1971.

Παραπομπή MLA

Bell, S.W, και H. Matley. Mathematics for Higher National Certificate. Cambridge University Press, 1971.