Παραπομπή APA

Clendinning, J., & Olliver, J. G. (1979). Principles and use of Surveying Instruments (3rd ed.). ELBS and Van Nostrand.

Παραπομπή Chicago Style

Clendinning, J., και J. G. Olliver. Principles and Use of Surveying Instruments. 3rd ed. London: ELBS and Van Nostrand, 1979.

Παραπομπή MLA

Clendinning, J., και J. G. Olliver. Principles and Use of Surveying Instruments. 3rd ed. ELBS and Van Nostrand, 1979.