Gaya APA
Cunningham, William P., Cunningham, Mary Ann. (2015).
Environmental Science: a global concern thirteenth edition (thirteenth edition).
New York:
McGraw-Hill Education.
Gaya Chicago
Cunningham, William P., Cunningham, Mary Ann.
Environmental Science: a global concern thirteenth edition.
thirteenth edition
New York:
McGraw-Hill Education,
2015.
ML.
Gaya MLA
Cunningham, William P., Cunningham, Mary Ann.
Environmental Science: a global concern thirteenth edition.
thirteenth edition
New York:
McGraw-Hill Education,
2015.
ML.
Gaya Turabian
Cunningham, William P., Cunningham, Mary Ann.
Environmental Science: a global concern thirteenth edition.
thirteenth edition
New York:
McGraw-Hill Education,
2015.
ML.