APA

Gibaldi J., Achtert W. S., . (1988). MLA handbook for writers of research papers. New York: Modern Language Association of America.

Chicago

Gibaldi Joseph, Achtert Walter S, . 1988. MLA handbook for writers of research papers. New York: Modern Language Association of America.

Harvard

Gibaldi J., Achtert W. S., . (1988). MLA handbook for writers of research papers. New York: Modern Language Association of America.

MLA

Gibaldi Joseph, Achtert Walter S, . MLA handbook for writers of research papers. New York: Modern Language Association of America. 1988.