APA استشهاد

Van Der Plas, H. C. (1973). Ring transformations of heterocycles. Academic Press.

استشهاد بنمط شيكاغو

Van Der Plas, H. C. Ring Transformations of Heterocycles. New York: Academic Press, 1973.

MLA استشهاد

Van Der Plas, H. C. Ring Transformations of Heterocycles. Academic Press, 1973.