Exercise book in Spanish;
a drill and exercise book on the subjunctive, idioms, pronouns, and irregular verbs,
by Lawrence A. Wilkins, and Hymen Alpern.

APA Citation

Wilkins, L. A. (Lawrence Augustus)., Alpern, H., Alpern, H. (1921). Exercise book in Spanish: a drill and exercise book on the subjunctive, idioms, pronouns, and irregular verbs. New York: Globe Book Co..

MLA Citation

Wilkins, Lawrence A. (Lawrence Augustus), 1878-, Hymen Alpern, and Hymen Alpern. Exercise Book In Spanish: a Drill And Exercise Book On the Subjunctive, Idioms, Pronouns, And Irregular Verbs. New York: Globe Book Co., 1921.

Warning: These citations may not always be complete (especially for serials).