You will find variations of punctuation and order of place of publication and publisher used in books and journals. There is no one correct form.
Consistency is most important.
Alexandra Hills State High School has adopted a form of the Harvard system , also known as the Author-Date System, as the school's referencing and bibliography standard. This system is the ONLY ONE to be used in your school assignment tasks. It was chosen because it is used widely and it is a simple system to learn and use. This does not imply that this form, or the conventions used, is considered to be the only correct one. You must acknowledge the sources of your quotations, facts or ideas.