Cita APA (7a ed.)
Clarke, I. F. (1990). From space to time; space, time, and humankind: More a meditation than a thesis. Futures, 22, 181-191.
Cita Chicago Style (17a ed.)
Clarke, I. F. "From Space to Time; Space, Time, and Humankind: More a Meditation than a Thesis." Futures 22 (1990): 181-191.
Cita MLA (9a ed.)
Clarke, I. F. "From Space to Time; Space, Time, and Humankind: More a Meditation than a Thesis." Futures, vol. 22, 1990, pp. 181-191.
Precaución: Estas citas no son 100% exactas.