APA

Glasby J. S., . (1971). Boundaries of the universe. Cambridge, Mass: Harvard University Press.

Chicago

Glasby John S, . 1971. Boundaries of the universe. Cambridge, Mass: Harvard University Press.

Harvard

Glasby J. S., . (1971). Boundaries of the universe. Cambridge, Mass: Harvard University Press.

MLA

Glasby John S, . Boundaries of the universe. Cambridge, Mass: Harvard University Press. 1971.