Cita APA (7a ed.)

Sherran, P., & Crawshaw, J. (1995). A level questions and answers q & a - Mathematics (1a ed.). [s.n.].

Cita Chicago Style (17a ed.)

Sherran, P., y J. Crawshaw. A Level Questions and Answers Q & a - Mathematics. 1a ed. Londres: [s.n.], 1995.

Cita MLA (9a ed.)

Sherran, P., y J. Crawshaw. A Level Questions and Answers Q & a - Mathematics. 1a ed. [s.n.], 1995.