The African species of Landolphia P. Beauv. : series of revisions of Apocynaceae XXXIV / 
Persoon, J. G. M.; van Dilst, F. J. H.; Kuijpers, R. P. e.a. 
 - 232 p. 
 - Wageningen agricultural university papers  92-2 .
<br/><br/><label>ISBN: </label>90-6754-234-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Landolphia--Classification--Africa<br/>(043)<br/>$?$94/12