Gottschalk và Gunnesdal cũng đưa ra những hiểu biết sâu sắc về các kỹ thuật ước tính cho nền kinh tế ngầm, nhằm cố gắng hiểu được quy mô của vấn đề.

The book providing essential information for business managers, computer programmers, system designers, as well as home computer users, DATABASE COMMUNICATIONS AND COMPUTER NETWORKS, 8th edition provides a thorough introduction that includes coverage of the language of computer networks as well as the effects of data communications on business and society

This books is develops students' ability to think critically in an academic context right from the start of their language learning. Every level has 100% new, inspiring video on a range of academic topics.