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El mayordomo un nuevo gestor de vida http://www.hotelresource.com/article39421El_Mayordomo_de_Hotel__un_nuevo_gestor_del_estilo_de_vida____By_Osvaldo_Torres_Cruz.html June 2009
http://www.hotelresource.com/article39681Through_the_Eyes_of_a_Hotel_Butler__Small_Details__Big_Degree_of_Difference___By_Osvaldo_Torres_Cruz.html June 2009
http://www.hotelresource.com/article39139Through_the_Eyes_of_a_Hotel_Butler__Eliciting_positive_emotions_and_feelings_through_the_customized_services_rendered___By_Osvaldo_Torres_Cruz.html
http://www.hotelresource.com/article38864Through_the_Eyes_of_a_Hotel_Butler__Mastering_guests__information___By_Osvaldo_Torres_Cruz.html June 2009