Parent's Guide to the Internet. US Department of Education.
芝加哥风格引文Parent's Guide to the Internet. US Department of Education.
MLA引文Parent's Guide to the Internet. US Department of Education.
警告：这些引文格式不一定是100％准确.
APA引文
Parent's Guide to the Internet. US Department of Education.
芝加哥风格引文Parent's Guide to the Internet. US Department of Education.
MLA引文Parent's Guide to the Internet. US Department of Education.