APA (7th ed.) Citation

Map Link (Firm). (1990). Map Link catalog: Travel maps and books for the entire world. Map Link.

Chicago Style (17th ed.) Citation

Map Link (Firm). Map Link Catalog: Travel Maps and Books for the Entire World. Santa Barbara, Calif.: Map Link, 1990.

MLA (9th ed.) Citation

Map Link (Firm). Map Link Catalog: Travel Maps and Books for the Entire World. Map Link, 1990.