function getBook( $blog_id ) {

		/** @var $wpdb \wpdb */
		global $wpdb;

		$sql = "SELECT * FROM {$this->dbTable} WHERE users_id = %d AND blogs_id = %d AND deleted = 0 ";

		return $wpdb->get_row( $wpdb->prepare( $sql, $this->userId, $blog_id ), ARRAY_A ); // @codingStandardsIgnoreLine
	}