Alviar, V. (2021). Preserving beauty, glory of historical watchtowers. IN Heritage structures [column]. Philippine Daily Inquirer.
芝加哥风格引文Alviar, Vaughn. "Preserving Beauty, Glory of Historical Watchtowers. IN Heritage Structures [column]." Philippine Daily Inquirer 2021.
MLA引文Alviar, Vaughn. "Preserving Beauty, Glory of Historical Watchtowers. IN Heritage Structures [column]." Philippine Daily Inquirer, 2021.
警告：这些引文格式不一定是100％准确.