APA

Giavarini C., Speight J. G., . (1991). Chemistry of bitumens. International symposium, June 5-8, 1991, Rome, Italy. Proceedings vol 1-2. Laramie, WY: Wyoming University Research Corporation.

Chicago

Giavarini Carlo, Speight James G, . 1991. Chemistry of bitumens. International symposium, June 5-8, 1991, Rome, Italy. Proceedings vol 1-2. Laramie, WY: Wyoming University Research Corporation.

Harvard

Giavarini C., Speight J. G., . (1991). Chemistry of bitumens. International symposium, June 5-8, 1991, Rome, Italy. Proceedings vol 1-2. Laramie, WY: Wyoming University Research Corporation.

MLA

Giavarini Carlo, Speight James G, . Chemistry of bitumens. International symposium, June 5-8, 1991, Rome, Italy. Proceedings vol 1-2. Laramie, WY: Wyoming University Research Corporation. 1991.