请教协议作为reference怎么写啊？

[2] 3GPP, RP-040461, ”Proposed Study Item on Evolved UTRA and
UTRAN“, www.3gpp.org.
[3] 3GPP, TR 25.913, “Requirements for Evolved UTRA and Evolved
UTRAN”, www.3gpp.org.
[1]     IEEE, “Reference number IEEE Std 802.11a-1999, 1999 edition. Supplement to IEEE Standard for Information Technology-Telecommunications and information exchange between systems-Local and metropolitan area networks-Specific Requirements- Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: Higher-Speed Physical Layer in the 5 GHz Band”, 1999.
有没有引号都没关系