APA引文

Angara, E. J. (1990). Issues of the 1990's and a need for a national vision in the 21st century. [publisher not identified].

芝加哥风格引文

Angara, Edgardo J. Issues of the 1990's and a Need for a National Vision in the 21st Century. [place of publication not identified]: [publisher not identified], 1990.

MLA引文

Angara, Edgardo J. Issues of the 1990's and a Need for a National Vision in the 21st Century. [publisher not identified], 1990.