Kelly, T. (2008). 50 rahasia alami penambah tenaga. Erlangga.
Chicago Style (17th ed.) CitationKelly, Tracey. 50 Rahasia Alami Penambah Tenaga. Erlangga, 2008.
MLA (8th ed.) CitationKelly, Tracey. 50 Rahasia Alami Penambah Tenaga. Erlangga, 2008.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.