Bibliografía (13 obras)
The new encyclopedia of hostas
2009
Timber Press pocket guide to hostas
2007
The color encyclopedia of hostas
2004
Daglelies
2002
Daylilies
Hosta
2001
Hostas
The gardener's guide to growing daylilies
1998
The gardener's guide to growing hostas
1996
1993
1990
The white garden
