Puff, C. <br/><br/>
Rubiaceae  fascicle 2 : rubioideae (second part) : paederieae, anthospermeae, rubieae. 

 - IX, 79 p.  ill. 
 - Flora of Southern Africa  31, 1, 2 .
<br/><br/><label>ISBN: </label>0-621-08876-5