Não informado. (1962). Experimental work. Edinburgh School of Agriculture.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Experimental Work. Edinburgh, Inglaterra: Edinburgh School of Agriculture, 1962.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Experimental Work. Edinburgh School of Agriculture, 1962.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.