APA (7e ed.) Bronvermelding

Romero, D. B. (1992). Vocabulary improvement: Words made easy. Crisp Publications.

Chicago (17e ed.) Bronvermelding

Romero, Diana Bonet. Vocabulary Improvement: Words Made Easy. Los Altos, Calif.: Crisp Publications, 1992.

MLA (9e ed.) Bronvermelding

Romero, Diana Bonet. Vocabulary Improvement: Words Made Easy. Crisp Publications, 1992.