Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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