Leysen, S. (2013). All u need is space. Serviço das Publicações da União Europeia.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিLeysen, Simon. All U Need Is Space. Serviço das Publicações da União Europeia, 2013.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিLeysen, Simon. All U Need Is Space. Serviço das Publicações da União Europeia, 2013.
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