Picker, M. (1991). Henricus Isaac: A guide to research. Garland.
Chicago Style (17th ed.) CitationPicker, Martin. Henricus Isaac: A Guide to Research. New York u.a: Garland, 1991.
MLA (9th ed.) CitationPicker, Martin. Henricus Isaac: A Guide to Research. Garland, 1991.
Warning: These citations may not always be 100% accurate.