Campbell, Ella O. (1987). "Monoclea (Hepaticae); Distribution and Number of Species". The Bryologist. 90 (4): 371–373. doi:10.2307/3243099. JSTOR3243099.
Campbell, Ella O. (1987). "Monoclea (Hepaticae); Distribution and Number of Species". The Bryologist. 90 (4): 371–373. doi:10.2307/3243099. JSTOR3243099.