Classification of the Bryophyta", pp. 55-138 in Goffinet, B. & J. Shaw (eds.) Bryophyte Biology, 2nd ed. (New York: Cambridge University Press). ISBN 9780521872256
anatomy, and systematics of hornworts”. In Goffinet, B. & Shaw, A.J.. Bryophyte Biology. 2nd ed.. Cambridge University Press. pp. 139-171. ISBN 978-0-521-69322-6
Classification of the Bryophyta”. In Bernard Goffinet & A. Jonathan Shaw (eds.). Bryophyte Biology (2nd ed.). Cambridge: Cambridge University Press. pp. 55-138.