Inglés: Aprendizaje de Verbos por Via Rapida: Los 100 verbos más usados en español con 3600 frases de ejemplo: Pasado. Presente. Futuro (Unabridged)
2016
Spanish: Verbs Fast Track Learning: The 100 Most Used Spanish Verbs with 3600 Phrase Examples: Past, Present and Future (Unabridged)
2016
English: Learning with Root Words: Earn One Latin-Greek Root to Learn Many Words. Boost Your English Vocabulary with Latin and Greek Roots! (Unabridged)
2018
Inglés: Aprendizaje de adjetivos por via rapida [English: Learning Adjectives Fast]: Los 100 adjetivos más usados en inglés con 800 frases de ejemplo [The 100 Most Used Adjectives in English with 800 Example Phrases] (Unabridged)
2017
Spanish: Fast Track Learning with Root Words for English Speakers: Boost Your Spanish Vocabulary with Latin and Greek Roots! Learn One Root to Learn Many Words in Spanish. (Unabridged)
2018
Costa Rica: Spanish Travel Phrases for English Speaking Travelers (Unabridged)
2016