Cita APA (7th ed.)

Wienert, K. A. (1970). Notes on geomagnetic observatory and survey practice. Unesco.

Cita Chicago (17th ed.)

Wienert, K. A. Notes on Geomagnetic Observatory and Survey Practice. [Paris]: Unesco, 1970.

Cita MLA (8th ed.)

Wienert, K. A. Notes on Geomagnetic Observatory and Survey Practice. Unesco, 1970.