Παραπομπή APA

Herubin, C. (1978). Principles of surveying (2.). Reston publishers.

Παραπομπή Chicago Style

Herubin, C.A. Principles of Surveying. 2. Virginia: Reston publishers, 1978.

Παραπομπή MLA

Herubin, C.A. Principles of Surveying. 2. Reston publishers, 1978.