Gaya APA

Griffiths, L. (2023). "Make money while you sleep: how to turn your knowledge into online courses that make you money 24hrs a day| . London: Hodder & Stoughton.

Gaya MLA

Griffiths, Lucy. ""Make money while you sleep: how to turn your knowledge into online courses that make you money 24hrs a day|". London: Hodder & Stoughton, 2023. book.