ERROR: "IDENTITY" is not valid at this position, expecting ')'

Question

Im trying to reverse engineer a table and when replicating their code I keep running into this error. It keeps happening every time I try to use the IDENTITY after my PRIMARY KEY. Not sure what I'm doing wrong, here's my code Error in question

CREATE TABLE tbl_book (
        book_BookID INT PRIMARY KEY NOT NULL IDENTITY (1,1),
        book_Title VARCHAR(100) NOT NULL,
        book_PublisherName VARCHAR(100) NOT NULL CONSTRAINT fk_publisher_name1 FOREIGN KEY REFERENCES tbl_publisher(publisher_PublisherName) ON UPDATE CASCADE ON DELETE CASCADE,);