APA citiranje

Del Prado, M. G. "The leaning tower of Bombon". s.n.

Chicago Style (17th ed.) Citation

Del Prado, Mariano Goyena. "The Leaning Tower of Bombon". s.l: s.n.

MLA citiranje

Del Prado, Mariano Goyena. "The Leaning Tower of Bombon". s.n.