Orchids of tropical Africa /

по Stewart, Joyce.
Опубликовано 1970

Orchids of Africa: a select review /

по Stewart, Joyce.
Опубликовано 1981

Angraeciod orchids : species from the African region /

по Stewart, Joyce,, Hermans, Johan,, Campbell, Bob,
Опубликовано 2006

Orchids at Kew /

Опубликовано 1992