Bird checklist for South Africa's national botanical gardens / compiled by Christopher K. Willis, Odette E. Curtis, Mark D. Anderson ; photographs by Mark D. Anderson.

mengikut Willis, Christopher K.
Diterbitkan 2008

Butterflies of South Africa's National Botanical Gardens : an illustrated checklist / compiled by Christopher K. Willis & Steve E. Woodall.

mengikut Willis, Christopher K.
Diterbitkan 2010

Southern African herbarium needs assessment / Gideon F. Smith, Christopher K. Willis, and Marthina Mössmer.

mengikut Smith, Gideon, 1959-
Diterbitkan 1999

Index herbariorum. Gideon F. Smith and Christopher K. Willis, [editors].

Diterbitkan 1999

Plants of the Nyika Plateau : an account of the vegetation of the Nyika National Parks of Malawi and Zambia / edited by John E. Burrows & Christopher K. Willis.

Diterbitkan 2005

Index herbariorum. editors Gideon F. Smith and Christopher K. Willis.

Diterbitkan 1997

Inventory, evaluation and monitoring of botanical diversity in southern Africa : a regional capacity and institution building network (SABONET) / prepared and edited by B.J. Huntle...

mengikut Huntley, B. J. 1944-
Diterbitkan 1998