Kohler, Ellen L., and Elizabeth K Ralph. "C-14 Dates for Sites in the Mediterranean Area" American Journal of Archaeology 65 (1961) 360-363.

Kuniholm, Peter I. Dendrochronology at Gordion and on the Anatolian Plateau (University of Pennsylvania, Ph.D. thesis, 1977).

Idem. "Dendrochronology and Radiocarbon Dates for Gordion and Other Phrygian Sites," pp. 5-8 in Muscarella, Oscar White (Ed.). Phrygian Art and Archaeology [Special issue of Source: Notes in the History of Art VII, nos. 3/4] (New York 1988).

Idem. "Aegean Dendrochronology Project: 1989-1990 Results" VI. Arkeometri Sonuçlari Toplantisi (Ankara 1991) 127-138. [Gordion 130-131]

Idem. "A 1503-Year Chronology for the Bronze and Iron Ages: 1990-1991 Progress Report of the Aegean Dendrochronology Project" VII. Arkeometri Sonuçlari Toplantisi (Ankara 1992) 121-130. [Gordion Kizlarkaya tumuli 123; Gordion Tumulus MM 128-129]

Idem. "Aegean Dendrochronology Project Extensions to the Long Chronologies" VIII. Arkeometri Sonuçlari Toplantisi (Ankara 1993) 453-464. [Gordion 453, 457]

Idem. "A Millennium of Tree Rings at Gordion" American Journal of Archaeology 97 (1993) 303.

Idem. "Aegean Dendrochronology Project: 1994-1995" XI. Arkeometri Sonuçlari Toplantisi (Ankara 1996) 189-201. [Gordion Tumulus Z 196]

Idem. "Aegean Dendrochronology Project: 1995-1996" XII. Arkeometri Sonuçlari Toplantisi (Ankara 1997) 163-175. [Gordion Tumulus B 166]

Ralph, Elizabeth K. "University of Pennsylvania Radiocarbon Dates III" American Journal of Science, Radiocarbon Supplement 1 (1959) 45-48 [esp. 46-47, for Gordion].

Young, Rodney S. Gordion Excavations Reports, Vol. I: Three Great Early Tumuli [P, MM, W] (Philadelphia, University Museum, 1981). [Reviews: Muscarella (1982), Moiseyeva (1983), Ramage (1983), Le Roy (1985)].