Cita APA (7th ed.)

Piper, A. G. (1991). Book-keeping (2a. ed.). Hodder & Stoughton.

Cita Chicago (17th ed.)

Piper, A. G. Book-keeping. 2a. ed. Londres: Hodder & Stoughton, 1991.

Cita MLA (9th ed.)

Piper, A. G. Book-keeping. 2a. ed. Hodder & Stoughton, 1991.