APA-viite (7. p.)

International Coal Preparation Congress Paris. (1973). 6th International Coal Preparation Congress, Paris, March 1973: [proceedings]. s.n..

Chicago-viite (17. p.)

International Coal Preparation Congress Paris. 6th International Coal Preparation Congress, Paris, March 1973: [proceedings]. [Paris?: s.n., 1973.

MLA-viite (8. p.)

International Coal Preparation Congress Paris. 6th International Coal Preparation Congress, Paris, March 1973: [proceedings]. s.n., 1973.