There are several ways of including sources in your work. You can summarise, paraphrase or directly quote the information. Whichever you use, you let your reader know by setting out the referencing details in a subtly different way as below.
Incorporate quotations of up to three lines into the text, within single quotation marks. Quotations within short quotations take double quotation marks:
Present quotations longer than three lines in an indented paragraph. Leave a line space either side of the indented paragraph. You do not need to use quotation marks.
A secondary reference is when you read a text in which the author refers to the work of another and you wish to refer to that work in your assignment. This practice is discouraged as you should always attempt to find the original source which you can analyse and evaluate on its own terms.
If it is not possible to find the original source, reference the source that you have not personally read first by adding a "Quoted in" at the beginning; then in brackets put ‘as cited in’ and cite the secondary source that you have read including the page number.