Cita APA (7a ed.)

Halstead, J. P., & Porcari, S. (1974). Modern European imperialism: A bibliography of books and articles, 1815-1972. G.K. Hall & Co.

Cita Chicago Style (17a ed.)

Halstead, John P., y Serafino Porcari. Modern European Imperialism: A Bibliography of Books and Articles, 1815-1972. Boston: G.K. Hall & Co, 1974.

Cita MLA (9a ed.)

Halstead, John P., y Serafino Porcari. Modern European Imperialism: A Bibliography of Books and Articles, 1815-1972. G.K. Hall & Co, 1974.