Judul: Marketing Management  How to Improve Your Customer Loyalty and Profitability  

Penulis: Lusiah, Lili Suryati , Andriasan Sudarso, Wikrama Wardana, Rini Astuti, Nana Trisnawati, Lenggogeni 

Sinopsis: Here there are buying and selling transactions, the exchange does not 
have to be with money, goods can also be exchanged for goods. For example,
foreign tourists are allowed to come to Bali to enjoy the beauty of the island of
Bali, foreign tourists hand over money to pay for what they have enjoyed while
on the island of Bali. The government provides various needs of the people
such as the needs of security, health, education, employment, transportation
and the people must pay taxes.