LaTeX.org

% if after 7 years someone is still interested in a possible solution using marginnote package:

\documentclass[11pt,a4paper]{article}
\usepackage{graphicx,marginnote,ragged2e}
\usepackage[%
left=2cm,
right=7cm,
top=2cm,
bottom=2cm,
textheight=25cm,
textwidth=11cm,
marginparsep=1cm,
marginparwidth ...