Gaya APA

Erling, N. (2016). NOBEL PRIZES AND NOTABLE DISCOVERIES . : CV. Spektra Anugerahabadi.

Gaya MLA

Erling, Norrby. "NOBEL PRIZES AND NOTABLE DISCOVERIES". : CV. Spektra Anugerahabadi, 2016. Tadris Ilmu Pengetahuan Alam.