Dear MP: to answer your first question first: no. You are under no obligation to give anyone a reference if you would rather not.

亲爱的万人迷：首先来回答你的第一个问题：不，只要你不愿意，你就没有义务去给任何人提供推荐信。

youdao

Begin by asking your father if we will have a double-dip recession, and make a show of taking note of his answer for future reference.

首先问你的父亲，经济是否会出现“双底衰退”，然后假装拿出笔记记录你父亲的答案，留作日后参考之用。

youdao

A typical search engine is a reference librarian: Ask it a question, and it suggests where to find the answer.

一个常用的搜索引擎被认为是一个可供参考的图书馆：你问它一个问题，它反馈给你找到问题答案的地址。

youdao

Any reference to a dispute resolution mechanism could delay a final answer for years.

BBC: Scottish independence: energy's alternating currents

When the words finally come, they often contain the answer to the original question along with a slew of related thoughts, and maybe a reference to a good book or two.

FORBES: Where The Cheap Stocks Are---Come Hell Or High Water