APA Style

CHRONOLOGY OF TWENTIETH-CENTURY HISTORY: ECOLOGY AND THE ENVIRONMENT. (1997). USA: FD.

Chicago Style

CHRONOLOGY OF TWENTIETH-CENTURY HISTORY: ECOLOGY AND THE ENVIRONMENT. VOLUME 1. USA: FD, 1997. Referensi.

MLA Style

CHRONOLOGY OF TWENTIETH-CENTURY HISTORY: ECOLOGY AND THE ENVIRONMENT. VOLUME 1. USA: FD, 1997. Referensi.

Turabian Style

CHRONOLOGY OF TWENTIETH-CENTURY HISTORY: ECOLOGY AND THE ENVIRONMENT. USA: FD, 1997. Referensi.