\qquadExample:
\cleardoublepage[1, 2], the two references can be placed separated by a comma \cite{lastname07,name06}\label should come after the \caption or even inside the \caption environment. If you put the \label before the \caption you will get a reference to the (sub)section; it is the \caption command that generates the number, so a \label before it cannot know that number. \"o, \"a, \"B, \"A, \"u, \"U, ...