缩写11：id.
拉丁文：idem
释义：the same (man) 同上
用法：用来避免（在引用、脚注、书目等处）重复某个男性作者的名字。如果是女性作者，用ead. (eadem)。
缩写12：i.a.
拉丁文：inter alia
释义：among other things 除了别的因素以外，特别
例句：Ernest Hemingway—author (i.a. 'The Sun Also Rises') and friend.
缩写13：i.e.
拉丁文：id est
释义：that is, in other words 即是
例句：For reasons not fully understood there is only a minor PSI contribution to the variable fluorescence emission of chloroplasts (Dau, 1994), i.e., the PSI fluorescence appears to be independent from the state of its reaction centre (Butler, 1978).
缩写14：lb.
拉丁文：libra
释义：scales 磅
缩写15：LL.B.
拉丁文：Legum Baccalaureus
释义：bachelor of laws 法学士
缩写16：M.A.
拉丁文：Magister Artium
释义：Master of Arts 文科硕士
缩写17：N.B.
拉丁文：nota bene
释义：note well 注意，留心
例句：N.B.: All the measurements have an accuracy of withi 5% as they were calibrated according to the procedure described by Jackson (1989).
缩写18：op.cit.
拉丁文：opere citato
释义：the work cited 在前面所引用的书中
用法：通常用于参考文献中，同ibid相似，但是ibid通常会跟着页码。