Tohutoro APA (7th ed.)
Perera, K., & Schechter, M. (2013). Topics in critical point theory. Cambridge University Press.
Tohutoru Kātū Chicago (17th ed.)
Perera, Kanishka, me Martin Schechter. Topics in Critical Point Theory. Cambridge: Cambridge University Press, 2013.
Tohutoro MLA (9th ed.)
Perera, Kanishka, me Martin Schechter. Topics in Critical Point Theory. Cambridge University Press, 2013.
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