Rules of Citation from Modern Language Association--pl don't go pissing all over the place without saying who said what where.
http://lima.osu.edu/academics/writing/mla_handout2.pdf
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https://www.google.com/search?client=firefox-b-1-d&q=Famous+Chinese+tenors#fpstate=ive&vld=cid:12005ab7,vid:_d4ap5I_tmk,st:0
