APA Style

Chang, L, L. (2018). Essence and essentials of purposive communication in the 21'st century (1st). 707 Taiga cor. Kasipagan stree: Books ATBP. Publishing Corp..

MLA Style

Chang, Liza, L.. "Essence and essentials of purposive communication in the 21'st century". 1st 707 Taiga cor. Kasipagan stree: Books ATBP. Publishing Corp., 2018. Text.