APA Style

Effendi, . et al (2009). Developing English Competencies for Grade XI of Natural and Social Science Programmers Senior High School (SMA/MA) 2 . Jakarta: Pusat Pembukuan Departemen Pendididkan Nasional.

MLA Style

Effendi, . et al. "Developing English Competencies for Grade XI of Natural and Social Science Programmers Senior High School (SMA/MA) 2". Jakarta: Pusat Pembukuan Departemen Pendididkan Nasional, 2009. Text.