APA (7th ed.) Citation

(1781). Puerto de Apra on the Island Guahan vulgo Guam: From a Spanish MS. G. Bigg.

Chicago Style (17th ed.) Citation

Puerto De Apra on the Island Guahan Vulgo Guam: From a Spanish MS. London: G. Bigg, 1781.

MLA (9th ed.) Citation

Puerto De Apra on the Island Guahan Vulgo Guam: From a Spanish MS. G. Bigg, 1781.

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