Lua APA (7ú heag.)

Borrington, K., & Stimpson, P. (2018). Cambridge IGCSE & O Level Business Studies Fifth Edition (5th.). Hodder Education.

Lua i Stíl Chicago (17ú heag.)

Borrington, Karen, agus Peter Stimpson. Cambridge IGCSE & O Level Business Studies Fifth Edition. 5th. UK: Hodder Education, 2018.

Lua MLA (9ú heag.)

Borrington, Karen, agus Peter Stimpson. Cambridge IGCSE & O Level Business Studies Fifth Edition. 5th. Hodder Education, 2018.

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