Heinen, T. (1996). Latent class and discrete latent trait models: Similarities and differences. Sage Pub.
Lua i Stíl Chicago (17ú heag.)Heinen, Ton. Latent Class and Discrete Latent Trait Models: Similarities and Differences. Thousand Oaks, Calif: Sage Pub, 1996.
Lua MLA (9ú heag.)Heinen, Ton. Latent Class and Discrete Latent Trait Models: Similarities and Differences. Sage Pub, 1996.
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