Hartner, Willy. 1984. Oriens-Occidens: Ausgewählte Schriften Zur Wissenschafts- Und Kulturgeschichte. Festschrift Zum 60. Geburtstag. Eds. Yasukatsu Maeyama and Schramm, Matthias. Vol. 2. Hildesheim & Zürich & New York: G. Olms.

Hartner, Willy. 1980. “Al-Battānī, Muḥammad Ibn Ğābir Ibn Sinān”. In Lexikon Des Mittelalters, 1:1551. München; Zürich: Artemis.

Hartner, Willy. 1971. “Ḥabas̲h̲ Al-Ḥāsib Al-Marwazī”. In Encyclopaedia Of Islam, Second Edition. Vol. 3.

Hartner, Willy. 1971. Trepidation And Planetary Theories: Common Features In Late Islamic And Early Renaissance Astronomy. Roma: Accademia nazionale dei Lincei.

Hartner, Willy. 1971. “Trepidation And Planetary Theories: Common Features In Late Islamic And Early Renaissance Astronomy”. In Oriente E Occidente Nel Medioevo: Filosofia E Scienze, 609-629. Rome: Accademia nazionale dei Lincei.

Gillispie, Charles, and Willy Hartner. 1970. “Al-Battānī”. In Dictionary Of Scientific Biography, 1:507-516. New York: Charles Scribner's Sons.

Hartner, Willy. 1960. “Abū Kāmil”. In Encyclopaedia 0F Islam, New Edition, 2nd ed, 1:132-133. Leiden: E.J. Brill.

Hartner, Willy. 1950. “The Astronomical Instruments Of Cha-Ma-Lu-Ting, Their Identification, And Their Relations To The Instruments Of The Observatory Of Marāgha”. Isis 41 (2): 184-194. (Reprinted in Hartner, Oriens-Occidens, edited by Gunter Kerstein et al., pp. 215–226. Hildesheim: Georg Olms, 1968.

Hartner, Willy, and Julius Ruska. 1939. Katalog Der Orientalischen Und Lateinischen Originalhandschriften, Abschriften Und Photokopien Des Instituts Für Geschichte Der Medizin Und Der Naturwissenschaften In Berlin. Berlin: verlag von J. Springer.