Παραπομπή σε μορφή APA (7η εκδ.)

Packwood, V. M., & Packwood, W. T. (1986). Admission requirements for international students at colleges and universities in the United States. Two Trees Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Packwood, Virginia M., και William T. Packwood. Admission Requirements for International Students at Colleges and Universities in the United States. Fargo, N.D.: Two Trees Press, 1986.

Παραπομπή σε μορφή MLA (9th εκδ.)

Packwood, Virginia M., και William T. Packwood. Admission Requirements for International Students at Colleges and Universities in the United States. Two Trees Press, 1986.