Gaya APA
Ratna, I., Akbar, B. (2013).
100% Kuasai Materi & Soal-soal Penting Matematika & Ipa .
jakarta:
PT. Graedia Widiasarana Indonesia.
Gaya MLA
Ratna, I., Akbar, Budhi.
"100% Kuasai Materi & Soal-soal Penting Matematika & Ipa".
jakarta:
PT. Graedia Widiasarana Indonesia,
2013.
Text.