How to do this in SQL?

Let's say I had a table...
CREATE TABLE book (
author oid,
name text );
and...
CREATE TABLE author (
name text );

and I wanted to create a book pointing to author with name 'Tolstoy'. I
want to do something like...

INSERT INTO book(name,author) values('War and Peace',
(SELECT oid FROM author WHERE name = 'Tolstoy'));

but this doesn't work. What is the correct syntax?

--
Chris Bitmead
http://www.bigfoot.com/~chris.bitmead
mailto:chris(dot)bitmead(at)bigfoot(dot)com