A beta demo version of the program is available through the above link. It is available from Statistical Modeling Innovations for a fee. WinLTA WinLTA is available from Linda Collins through the above link. See Miracle 32. This list is limited to books published in English.
Additional literature exists in other languages.
Latent Class Models. Handbook of statistical modeling for the social and behavioral sciences. Latent class models for measuring. Latent trait and latent class models. Loglinear models with latent variables.