APA استشهاد

Kramer, L. (1998). EC Treaty and environmental law (ed. 3.). Sweet and Maxwell.

استشهاد بنمط شيكاغو

Kramer, Ludwig. EC Treaty and Environmental Law. ed. 3. London: Sweet and Maxwell, 1998.

MLA استشهاد

Kramer, Ludwig. EC Treaty and Environmental Law. ed. 3. Sweet and Maxwell, 1998.