Tomás, D. (2009). TrainQA: A Training Corpus for Corpus-Based Question Answering Systems. Instituto Politécnico Nacional.
Citazione stile Chigago Style (17a edizione)Tomás, David. TrainQA: A Training Corpus for Corpus-Based Question Answering Systems. Instituto Politécnico Nacional, 2009.
Citatione MLA (9a ed.)Tomás, David. TrainQA: A Training Corpus for Corpus-Based Question Answering Systems. Instituto Politécnico Nacional, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.