Cita APA (7th ed.)

Heeger, T. (2002). Marine ornamental collections: A trainer's guide. German Technical Cooperation (GTZ).

Cita Chicago (17th ed.)

Heeger, T. Marine Ornamental Collections: A Trainer's Guide. Stuttgart, Germany: German Technical Cooperation (GTZ), 2002.

Cita MLA (9th ed.)

Heeger, T. Marine Ornamental Collections: A Trainer's Guide. German Technical Cooperation (GTZ), 2002.