APA Style

Khotimah, K. et al (2012). Mathematics Focus : Workbook Mathematics For Elementary School Year 1B (Bilingual Based on KTSP 2006) (1st Ed.). Jakarta: Yudhistira.

MLA Style

Khotimah, Khusnul. et al. "Mathematics Focus : Workbook Mathematics For Elementary School Year 1B (Bilingual Based on KTSP 2006)". 1st Ed. Jakarta: Yudhistira, 2012. Text.