Gaya APA

MILLER, G, T., SPOOLMAN, S, E. (2016). ENVIRONMENTAL SCIENCE 15TH EDITION (ED. 15). Singapore: CENGAGE LEARNING.

Gaya MLA

MILLER, G., TYLER., SPOOLMAN, SCOTT, E.. "ENVIRONMENTAL SCIENCE 15TH EDITION". ED. 15 Singapore: CENGAGE LEARNING, 2016. Text.