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Many of the schematics I've seen in reference schematics use an the symbol of an inductor as the symbol for a ferrite bead (makes sense).
But I've also seen other variants of it as well. I don't have the IEEE 315 document, but I know that there are somethings that we do in North America that isn't exactly IEEE standards.
Bonus question: Is there a document or source that lists North American standard symbols ?
The IEEE is a US-founded organization that has brought "North American standards" to much of the rest of the world. Any non-IEEE symbols being used in North America merely demonstrate our inability to fully standardize those symbols on the continent. A copy of IEEE 315 if anyone is looking.
The alternative to IEEE is the Europe-based IEC, and I could not find any information on their preferred standard for a ferrite bead.
The person who assembled those images had no final answer either; simply put, the IEEE's is the only ferrite bead standard I was able to confirm.
Not sure about standards, but here's another option I ran across recently on an Atmel schematic. From the first-angle projection symbol on the schematic and other hints I would guess it to be non-North American in origin, most likely Asian.
This is another one (European, I think) that I have used:
IEEE Std 315-1975 has these (both shown in the pirated pdf linked in another answer):
The IEC 60617 symbol for a ferrite bead is shown in IEEE 315A, Clause 6.2.11 as follows:
The class letter to use in a ref des is E.
