Παραπομπή APA

Halley, R. (1982). Agricultrual note book (17.). Butterworth Scientific.

Παραπομπή Chicago Style

Halley, R.J. Agricultrual Note Book. 17. London: Butterworth Scientific, 1982.

Παραπομπή MLA

Halley, R.J. Agricultrual Note Book. 17. Butterworth Scientific, 1982.