Complete references are listed

Numbers in parentheses are reference numbers and indicate that the author s work is referred to although his name is not mentioned in the text, Numbers in italic show the pages on which the complete references are listed,... 

Numbers in parentheses are reference citation numbers. Complete references are listed in numerical order at the end of each chapter in which they are cited. 

Numbers in italics refer to the pages on which the complete references are listed. 

---