Template:Harvard citation

({{ safesubst:p{{ safesubst:#ifTemplate:Booleq:{{ safesubst:p{{ safesubst:#if

      :{{{1}}} et al. {{{5}}}
      |1|2}}|{{ safesubst:p{{ safesubst:#if
         :{{{1}}}, {{{2}}} & {{{3}}} {{{4}}}
         |1|2}}|{{ safesubst:p{{ safesubst:#if
            :{{{1}}} & {{{2}}} {{{3}}}
            |1|2}}|{{{1}}} {{{2}}}
          |}}
       |}}
    |}}|1|2}}|Template:Wikilink|}}{{{3}}})