Παραπομπή APA

Lisi, A. (1968). Round trip from poptun: A journey in search of the Maya. Travel Book Club.

Παραπομπή Chicago Style

Lisi, Albert. Round Trip from Poptun: A Journey in Search of the Maya. London: Travel Book Club, 1968.

Παραπομπή MLA

Lisi, Albert. Round Trip from Poptun: A Journey in Search of the Maya. Travel Book Club, 1968.