Quotation is the prose extracted of a text that you want to insert in your own text.We use the elements "blockquote" or "quote" for this.
Citation is the reference giving the source of the quote:authors' names,title,pages,volumes,etc.We the element "cite" for this.
举例：The quotation is the actual excerpt:'To be or not to be,that is the question'.The citation is the reference:'Shakespeare,Hamlet,III,i,56).