It depends on the license terms,

來源: greenlawn 於 2012-12-24 12:57:43 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (193 bytes)
本帖於 2012-12-24 13:10:23 時間, 由普通用戶 花椒~ 編輯

many did not have any. More do now.

For those who do have license terms now, many need attribution. I am adding them. You can click on the images in this post to see the sources.

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