Citazione APA

Butter, H. (1849). The scholar's companion: Containing exercises in the orthography, derivation, and classification of English words (84th ed.). Henry Perkins.

Stile di citazione Chicago

Butter, Henry. The Scholar's Companion: Containing Exercises in the Orthography, Derivation, and Classification of English Words. 84th ed. Philadelphia: Henry Perkins, 1849.

Citazione MLA

Butter, Henry. The Scholar's Companion: Containing Exercises in the Orthography, Derivation, and Classification of English Words. 84th ed. Henry Perkins, 1849.