Error in documentation

Hello,

in the tutorial ( HTML and PDF ) I found the folowing example

The new declaration of the tables would look like this:
CREATE TABLE cities (
name varchar(80) primary key,
location point
);

Chapter 3. Advanced Features

CREATE TABLE weather (
city varchar(80) references weather,
temp_lo int,
temp_hi int,
prcp real,
date date
);

Is this ok should the reference not be "references cities" ?

Bye
Andreas