[1]
Text{{ref|Hubel 1962}}
Which will result in:
Text[2]
You can also specify the same parameter via "name"
Text{{ref|name=Hubel 1962}}
Which will result in:
Text[3]
If you leave it blank, the "default" reference will be used (never good!):
Text[4]
Complex cells[5] and hypercomplex cells [6]