Gilo และ Johnny Laurence Santos. (2011) Agro-tourism strategies for farmers in Banaue, Ifugao : The Philippines /. Maejo University,:ม.ป.ท.Gilo และ Johnny Laurence Santos. 2011. Agro-tourism strategies for farmers in Banaue, Ifugao : The Philippines /. ม.ป.ท.:Maejo University,;Gilo และ Johnny Laurence Santos. Agro-tourism strategies for farmers in Banaue, Ifugao : The Philippines /. ม.ป.ท.:Maejo University, 2011. Print.