Cite forthcoming (not yet published) articles the same way as published article, but follow the citation with '(forthcoming)'.
If the volume/page numbers are not known, simply omit them.
Example:
Virginie Barral, 'Towards Judicial Coordination for Good Water Governance' ICLQ (forthcoming).
Example:
Virginie Barral, 'Towards Judicial Coordination for Good Water Governance' ICLQ (forthcoming).
The only differences are that the author is now listed surname first followed by their initials, page numbers are not included and there is no full stop at the end of the reference. Omit the word forthcoming.
Examples:
Barral V, 'Towards Judicial Coordination for Good Water Governance' ICLQ