This can be used for APA style references in LyX of not want to use the bib file.
The following procedure can be used to create a list of references for your own style.
Style List Margin Static LatexType Item_Environment LatexName reflist NextNoIndent 1 LeftMargin MMN LabelSep xx ItemSep 0.2 TopSep 0.7 BottomSep 0.7 ParSep 0.3 Align Block AlignPossible Block, Left LabelType Itemize End
\newenvironment{reflist}{ \begin{list}{}{\leftmargin=1em \itemindent=-1em} }{ \end{list} }