Παραπομπή APA

Barker, M. L. (1971). Pears cyclopaedia [1971-1972]: Book of background information and reference for everyday use. Pelham Books.

Παραπομπή Chicago Style

Barker, Mary L. Pears Cyclopaedia [1971-1972]: Book of Background Information and Reference for Everyday Use. Pelham Books, 1971.

Παραπομπή MLA

Barker, Mary L. Pears Cyclopaedia [1971-1972]: Book of Background Information and Reference for Everyday Use. Pelham Books, 1971.