Gaya APA

BERNSTEIN, L. et al (2009). Earth. Science : Concepts and Challenges Teacer's Edition / BERNSTEIN, Leonard ,: SCHACHTER, Martin ,: WINKLER, Alan, Dkk (Ed.4). America: Pearson Education.

Gaya MLA

BERNSTEIN, Leonard. et al. "Earth. Science : Concepts and Challenges Teacer's Edition / BERNSTEIN, Leonard ,: SCHACHTER, Martin ,: WINKLER, Alan, Dkk". Ed.4 America: Pearson Education, 2009. Text.