A grammar of the modern Spanish language as now written and spoken in the capital of Spain
MLA
Knapp, William Ireland. A Grammar of the Modern Spanish Language As Now Written and Spoken In the Capital of Spain. 2d ed. carefully rev. Boston: Ginn & Co., 1891
APA, 7th edition
Knapp, W. Ireland. (1891). A grammar of the modern Spanish language as now written and spoken in the capital of Spain. 2d ed. carefully rev. Boston: Ginn & Co
Chicago, 17th edition
Knapp, William Ireland. A grammar of the modern Spanish language as now written and spoken in the capital of Spain. 2d ed. carefully rev. Boston: Ginn & Co., 1891