How to give the reference when citing a sentence on the page "x" of a book?

By theory, I should cite it like [Krusche1999, p. x]. If it were on page iii or page xi, it would look better, such as [Krusche1999, p. iii], [Krusche1999, p. xi]. However, it is on page x. so we end up with "p. x". At least to me, I won't understand, what p. x means at first sight. What do you guys think? Any good idea?