Dear Peter, Copyright ...
Published by Hartej Baksh Singh, Managing Partner at Quintillion Business Solutions LLP
Dear Peter,
Copyright permission comes into force, if you're going to use written material as part of your publication/book.
However if you're going to quote a page, paragraph, or a line, all you require to do is quote the source. The attribution may be inline, in a footnote or as a bibliographic reference.
Just make sure you give the full reference. (Name of publication, Author(s)/Editor(s), Name of Publisher, Year of publication, (specific page numbers if necessary).
Trust that answers your question.
Hartej