Reference list

Here is the mapping from the number at the end of each example sentence to the author of the book which contains that sentence.

(1) – Ambrose Bierce
(2) – Robert Louis Stevenson
(3) – George Meredith
(4) – Jane Austen
(5) – Georg Ebers
(6) – Charles James Lever
(7) – Ambrose Bierce
(8) – John Galsworthy
(9) – William Dean Howells
(10) – George Meredith

To find additional detail such as the title of the specific book which the sentence is from and perhaps even the exact book page number, searching for the sample sentence in quotes in a search engine will often provide the information.