Dokumentuaren aipamena

APA aipamena

S Birdsall. (1999). Khái quát về địa lý Mỹ: = An outline of American geography. Hà Nội: Chính Trị Quốc Gia.

Chicago Style aipamena

S Birdsall. Khái Quát Về địa Lý Mỹ: = An Outline of American Geography. Hà Nội: Chính Trị Quốc Gia, 1999.

MLA aipamena

S Birdsall. Khái Quát Về địa Lý Mỹ: = An Outline of American Geography. Hà Nội: Chính Trị Quốc Gia, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.