Janusz Gumkowkski and Kazimierz Leszczynski. Hitler's Plans for Eastern Europe. Warsaw, Poland: Polonia Publishing House: 7–33, 164–178. [2014-05-30]. (原始内容存档于2012-05-27).
books.google.com
Widney, Joseph P(英语:Joseph Pomeroy Widney). Race Life of the Aryan Peoples (页面存档备份,存于互联网档案馆) New York: Funk & Wagnalls. 1907 In Two Volumes: Volume One—The Old World Volume Two—The New World ISBN B000859S6O See Chapter II—"Original Homeland of the Aryan Peoples" Pages 9–25—the term “Proto-Aryan” was used to describe the people later called Proto-Aryans.
Janusz Gumkowkski and Kazimierz Leszczynski. Hitler's Plans for Eastern Europe. Warsaw, Poland: Polonia Publishing House: 7–33, 164–178. [2014-05-30]. (原始内容存档于2012-05-27).
web.archive.org
Widney, Joseph P(英语:Joseph Pomeroy Widney). Race Life of the Aryan Peoples (页面存档备份,存于互联网档案馆) New York: Funk & Wagnalls. 1907 In Two Volumes: Volume One—The Old World Volume Two—The New World ISBN B000859S6O See Chapter II—"Original Homeland of the Aryan Peoples" Pages 9–25—the term “Proto-Aryan” was used to describe the people later called Proto-Aryans.
Widney, Joseph P(英语:Joseph Pomeroy Widney). Race Life of the Aryan Peoples (页面存档备份,存于互联网档案馆) New York: Funk & Wagnalls. 1907 In Two Volumes: Volume One—The Old World Volume Two—The New World ISBN B000859S6O See Chapter II—"Original Homeland of the Aryan Peoples" Pages 9–25—the term “Proto-Aryan” was used to describe the people later called Proto-Aryans.