APA (7e ed.) Bronvermelding

Unesco. (1971). The surveillance and prediction of volcanic activity: A review of methods and techniques. Unesco.

Chicago (17e ed.) Bronvermelding

Unesco. The Surveillance and Prediction of Volcanic Activity: A Review of Methods and Techniques. Paris: Unesco, 1971.

MLA (9e ed.) Bronvermelding

Unesco. The Surveillance and Prediction of Volcanic Activity: A Review of Methods and Techniques. Unesco, 1971.