Independently published Comparative Grammar of Spanish, Portuguese, Italian and French: Learn & Compare 4 Languages Simultaneously

Comparative Grammar of Spanish, Portuguese, Italian and French: Learn & Compare 4 Languages Simultaneously

Fluent Forever (Revised Edition): How to Learn Any Language Fast and Never Forget It

Comparative Grammar of Spanish, Portuguese, French, Italian, Romanian and Catalan: Learn 6 Romance Languages at the Same Time (Grammars of Language Families)