APA (7th ed.) Citation

Great Britain. Directorate of Overseas Surveys. (1967). Montserrat (2nd ed.). DOS.

Chicago Style (17th ed.) Citation

Great Britain. Directorate of Overseas Surveys. Montserrat. 2nd ed. [Tolworth, Surrey?]: DOS, 1967.

MLA (9th ed.) Citation

Great Britain. Directorate of Overseas Surveys. Montserrat. 2nd ed. DOS, 1967.

Warning: These citations may not always be 100% accurate.