24658, P. I. I. (1981). PHP. Tokio, JP: PHP Institute International.
芝加哥风格引文24658, PHP Institute International. PHP. Tokio, JP: PHP Institute International, 1981.
MLA引文24658, PHP Institute International. PHP. Tokio, JP: PHP Institute International, 1981.
警告：这些引文格式不一定是100％准确.