Lettera 1; a standard book of fine lettering

MLA

Haab, A, and A Stocker. Lettera 1; a Standard Book of Fine Lettering. Teufen AR: Arthur Niggli, 1966.

APA

Haab, A., & Stocker, A. (1966). Lettera 1; a standard book of fine lettering. Teufen AR: Arthur Niggli.

Chicago

Haab, A., and A Stocker. Lettera 1; a Standard Book of Fine Lettering. Teufen AR: Arthur Niggli, 1966.