Parker, G. H. Animal colours changes and their neurohumours. Cambridge university press.
Chicago Edition CitationParker, George Howard. Animal Colours Changes and Their Neurohumours. Cambridge university press.
ציטוט MLAParker, George Howard. Animal Colours Changes and Their Neurohumours. Cambridge university press.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.