APA-ийн эшлэл(7 дахь хэвлэлт)

Wotzkow, H. (1967). The art of hand-lettering: Its mastery and practice. Dover.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Wotzkow, Helm. The Art of Hand-lettering: Its Mastery and Practice. Nueva York: Dover, 1967.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Wotzkow, Helm. The Art of Hand-lettering: Its Mastery and Practice. Dover, 1967.