APA

Robertson J. P., Robertson G. P., . (1838). Four years in Paraguay : comprising an account of that republic, under the government of dictator Francia. Philadelphia: E. L. Carey & a. Hart.

Chicago

Robertson John Parish, Robertson Guillermo P, . 1838. Four years in Paraguay : comprising an account of that republic, under the government of dictator Francia. Philadelphia: E. L. Carey & a. Hart.

Harvard

Robertson J. P., Robertson G. P., . (1838). Four years in Paraguay : comprising an account of that republic, under the government of dictator Francia. Philadelphia: E. L. Carey & a. Hart.

MLA

Robertson John Parish, Robertson Guillermo P, . Four years in Paraguay : comprising an account of that republic, under the government of dictator Francia. Philadelphia: E. L. Carey & a. Hart. 1838.