IPC Science and Technology Press, Westview Press, McHale, J., McHale, M. C., Streatfeild, G. F., & Tobias, L. (1977). The Futures directory: An international listing and description of organizations and individuals active in futures studies and long-range planning. IPC Science and Technology Press ; Westview Press.
Cytowanie według stylu Chicago (wyd. 17)IPC Science and Technology Press, Westview Press, John McHale, Magda Cordell McHale, Guy F. Streatfeild, i Laurence Tobias. The Futures Directory: An International Listing and Description of Organizations and Individuals Active in Futures Studies and Long-range Planning. Guildford : Boulder: IPC Science and Technology Press ; Westview Press, 1977.
Cytowanie według stylu MLA (wyd. 9)IPC Science and Technology Press, et al. The Futures Directory: An International Listing and Description of Organizations and Individuals Active in Futures Studies and Long-range Planning. IPC Science and Technology Press ; Westview Press, 1977.