Richard Wilson, Secret Shakespeare: studies in theatre, religion and resistance, Manchester University Press 2004 (p.233 on Google books). This source refers to Michael Wood's claims regarding Shakespeare's authorship of "Woods, rocks, and mountains".
hoasm.org
Robert Johnson, Here of a Sunday Morning (www.hoasm.org).
Matthew Spring, ‘Johnson, Robert (c.1583–1633)’, Oxford Dictionary of National Biography, Oxford University Press, 2004; online edn, Oct 2009 accessed 17 June 2015 (subscription or UK public library membership required)
