Playground Worlds
Z Larpedie
Markus Montola, Jaakko Stenros (editoři): Playground Worlds. Solmukohta 2008. ISBN 978-952-92-3579-7 (tisk), 978-952-92-3580-3 (online)
Markus Montola, Jaakko Stenros (editoři): Playground Worlds. Solmukohta 2008. ISBN 978-952-92-3579-7 (tisk), 978-952-92-3580-3 (online)