Chapter
Grambast, L.J. & Lacey, W.S.
1967. Chapter 3. Bryophyta and Charophyta. In W.B. Harland, C.H. Holland, M.R. House, N.F. Hughes, A.B. Reynolds, M.J.S. Rudwick, G.E. Satterthwaite, L.B.H. Tarlo & E.C. Willey (eds.), Foss. Rec., Oct 1967: 211-217.