I find that some lecture notes available online as well as some websites (e.g. wiki) provide important sources of information for various scientific fields (e.g. mathematics), and are sometimes better than officially published papers or books in certain senses.

My question is that if I write a paper for official publication, can I cite them in the reference of the paper? If so, what is the format to cite them? For examples, to cite an online lecture note, may I simply write as preprint, or have to add the weblink to the note? For web sources, may I add weblinks of the websites to be cited?

For example, is it valid to cite something like: "P Schlicht. Lecture Note: A Introduction to Model Theory, Online...(or Preprint...), 2018"? I think there is no need to add the actual link to it because the link can be changed later.

Edit: This question is different from the suggested question for duplicate because I ask also what is the format to cite online notes and websites.

  • mostly online notes provide references in the last page. you can cite from there – Muhammad Ashfaq May 30 '20 at 1:26
  • 3
    It's far more important to be precise and clear than to follow a rigid format. Make a good faith effort; if the copy editor cares, they'll fix whatever they think is wrong. Readers won't care. – JeffE May 30 '20 at 1:51
  • @JeffE, do you think the example in the post is valid or not? – hermes May 30 '20 at 1:53
  • You're missing a URL; otherwise it looks fine to me (assuming the actual title of the document begins "Lecture Note:"). But I'm not the person you have to please. – JeffE May 30 '20 at 1:56
  • But a URL can be changed later, e.g.if a person is moving to another institution. – hermes May 30 '20 at 1:57