Toni del Renzio, 'Arnaldo Pomodoro: Invention of a Sculptural Style' in: Art International - Special Number: The 34th Venice Biennale, vol. XII/6, Summer 1968, p. 96, another example illustrated twice in black and white (installation views)
Ton Frenken, 'De bronzen bollen van de Italiaan Arnoldo Pomodoro' in: Eindhovens Dagblad, No. 124, 24 May 1969, p. 9, another example illustrated in black and white (installation view)
Sonja Luyken, 'Außenwelt als Spiegel der inneren Form' in: Weser-Kurier, 6 August 1969, p. 16, another example illustrated in black and white (installation view)
Erich Pfeiffer-Belli, 'Goldener Glanz' in: Süddeutsche Zeitung, 24 May 1972, p. 9, another example illustrated in black and white (installation view)
Sam Hunter Et al., Libro per le Sculture di Arnaldo Pomodoro, Milan 1974, p. 35, another example illustrated in black and white (installation view) and p. 37, another example illustrated in black and white (installation view)
Alberto Pivi Ed., Maestri Contemporanei: Arnaldo Pomodoro, Milan 1978, pp. 12-13, another example illustrated in colour (installation view)
Giorgio di Genova, Generazione anni Venti, Rieti 1981, p. 172, no. 223, another example illustrated in black and white (installation view)
Gunnar Bråhammar and Kristina Garmer, Moderna Mastare, Malmö 1981, p. 366, another example illustrated in colour (installation view)
Guido Balla, 'Tensioni Segrete' in: Colpo d'ala di Arnaldo Pomodoro, Rome 1988, pp. 40-41, another example illustrated in black and white (installation view)
Giorgio di Genova, Storia dell'arte Italiana del '900 per generazioni: Generazione anni Venti, Bologna 1991, p. 331, no. 483, another example illustrated in black and white (installation view)
Flaminio Gualdoni, Arnaldo Pomodoro: Catalogo ragionato della scultura, Tomo II, Milan 2007, p. 538, no. 442, another example illustrated in black and white
Angela Vettese, Ugo Mulas - fotografia - Arnaldo Pomodoro, Milan 2008, p. 87, another example illustrated in black and white (installation view) and pp. 98-99, another example illustrated in black and white (installation view)