APA

Jelinek E., Blumenthal P., .Einar. : The Post-Apollo Press.

Chicago

Jelinek Elfriede, Blumenthal P.J, .Einar. : The Post-Apollo Press.

Harvard

Jelinek E., Blumenthal P., .Einar. : The Post-Apollo Press.

MLA

Jelinek Elfriede, Blumenthal P.J, .: The Post-Apollo Press. .