Quote very limited portions of the Judgment, such which is absolutely relevant and essential to your case. Even when quoting a paragraph, you my leave out unnecessary words and phrases from the paragraph to ensure brevity, but make absolutely sure that leaving out any portion of the paragraph does not have an affect on the meaning of a sentence. Indicate omitted text by ... where you are quoting.
Format quoted text as italics and within inverted commas.
You should quote from reputed law reporter/Journal like SCC, AIR or state specific like ALT, DLT ... or Court/subject specific like CPJ, CompCas, PTC, ArbLR (Supreme Court accepts SCC citations only and AIR, only where case is not reported in SCC). All of them will have paragraph number. SCC and SCR will have a placitum in addition to the paragraph number. Placitums are small alphabetical characters along the margins of the page that aid in further pin-pointing the location of the text on the page. Refer to citation, page no. and paragraph no. in your Written Submissions/pleadings.
Before Supreme Court, you need not give a copy of the Judgment, just a list of cases to the Court Master on the morning of hearing before the Bench assembles. Before High Court, it's better if you give a copy of the Judgments along with the list of cases. Before the lower Court, it's a must that you give a copy of the judgments and Court doesn't usually bother about your list of cases!
Before lower Court, you may also underline relevant portions of the judgment to make it easier for the Bench to copy-paste! But do not do any marking in High Court or the Bench would be all over you.