- John Woldemar Cowan, The Complete Lojban Language, ISBN 0-9660283-0-9
- Geoffrey Sampson, Review of The Complete Lojban Language by J.W. Cowan, Journal of Linguistics 35 447-8 (1999)
- Alan Libert, A Priori Artificial Languages, Lincom Europa, (Languages of the World, 24) ISBN 3-89586-667-9