APA استشهاد

Schumacher, A. (1973). Development plans and planning: Bibliographic and computer aids to research. Seminar press.

استشهاد بنمط شيكاغو

Schumacher, August. Development Plans and Planning: Bibliographic and Computer Aids to Research. London: Seminar press, 1973.

MLA استشهاد

Schumacher, August. Development Plans and Planning: Bibliographic and Computer Aids to Research. Seminar press, 1973.