How to know the real eytomolgy for any kanji?


When i ask on this site for the eytomolgy for any kanji .somebody comes (like
user called droooze) and answer my question by explaining the eytomolgy and
giving a pictures of the kanji in the seal script or bone script ... etc My
question is what is the source which those who answer my qustions take this
information from?




One English-language source is The Complete Guide to Japanese Kanji.
[https://www.amazon.com/Complete-Guide-Japanese-Kanji-
Understanding/dp/4805311703/ref=sr_1_6?keywords=Kanji&qid=1551571203&s=gateway&sr=8-6](https://rads.stackoverflow.com/amzn/click/com/4805311703)




One English-language source is The Complete Guide to Japanese Kanji.
[https://www.amazon.com/Complete-Guide-Japanese-Kanji-
Understanding/dp/4805311703/ref=sr_1_6?keywords=Kanji&qid=1551571203&s=gateway&sr=8-6](https://rads.stackoverflow.com/amzn/click/com/4805311703)

