- [RFC2119] Bradner, S., "RFC 中用于指示需求级别的关键词", BCP 14, RFC 2119, March 1997.
- [RFC3629] Yergeau, F., "UTF-8, ISO 10646 的一种转换格式", STD 63, RFC 3629, November 2003.
- [RFC3986] Berners-Lee, T., Fielding, R., and L. Masinter, "统一资源标识符 (URI): 通用语法", STD 66, RFC 3986, January 2005.
- [RFC4627] Crockford, D., "用于 JavaScript Object Notation (JSON) 的 application/json 媒体类型", RFC 4627, July 2006.
- [RFC5234] Crocker, D. and P. Overell, "语法规范的增强型 BNF: ABNF", STD 68, RFC 5234, January 2008.
- [RFC6838] Freed, N., Klensin, J., and T. Hansen, "媒体类型规范和注册过程", BCP 13, RFC 6838, January 2013.