Παραπομπή APA

Herubin, C. A. (1974). Principles of surveying. Reston.

Παραπομπή Chicago Style

Herubin, Charles A. Principles of Surveying. Virginia: Reston, 1974.

Παραπομπή MLA

Herubin, Charles A. Principles of Surveying. Reston, 1974.